• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'

2

'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down

3

Jensen Huang made his $172 billion fortune on AI chips. His family's $75 million gift to Vanderbilt argues art decides what technology is for

1

The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'

2

'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down

3

Jensen Huang made his $172 billion fortune on AI chips. His family's $75 million gift to Vanderbilt argues art decides what technology is for
Tech

When do Twitter block lists start infringing on free speech?

By
Mathew Ingram
Mathew Ingram
Down Arrow Button Icon
By
Mathew Ingram
Mathew Ingram
Down Arrow Button Icon
June 12, 2015, 12:59 PM ET
Twitter Goes Public On The New York Stock Exchange
Andrew Burton Getty Images
Add Fortune on Google for similar content.

If the early days of the social web were all about increasing the amount of freedom that people had to express themselves, more recent history seems to be about moderating or restricting or circumscribing that freedom—whether it’s Facebook censoring things, or Reddit banning offensive sub-groups like r/fatpeoplehate, or Twitter making it easier for people to share lists of users they have blocked for abuse.

On the one hand, these kinds of measures are clearly necessary. Many users of these services—and particularly women, visible minorities, transgender people, etc.—are routinely harassed and targeted for abuse, as we’ve seen with issues like GamerGate, and platforms like Twitter (TWTR) have been criticized for not doing enough to protect them. Block lists are clearly an attempt to make up for that.

By adding this feature, Twitter is taking a cue from popular third-party services like BlockTogether, which was created by a former engineer at Twitter. There are even automated account filters or bots that allow users to outsource their blocking. Anyone who makes it onto the list simply never appears in a user’s timeline—in terms of the Twitter network, it’s as though they never existed.

Just as some Reddit users have complained that their free-speech rights are being infringed by the site’s blocking and banning, there are those who argue that Twitter is also encouraging such behavior with its shared block lists. And while it’s true that the First Amendment only applies to governments, not individuals or corporations, there is a point at which it’s reasonable to get concerned about the impact on speech.

“it’s kind of a fraught conversation, no question,” says Jillian York, the director for international freedom of expression for the Electronic Frontier Foundation. “It’s one thing if a block list is public, so it’s transparent, but there are private block lists as well and that’s a little disturbing. I’ve already seen a couple of journalists using them to block people who aren’t even really harassing.”

The risk, York says, is that these kinds of crowdsourced lists could be used in political ways, as a way to “silence specific groups.” In a sense, they could become a new kind of blacklist, in the same way that lists of suspected Communists were used to deny certain people work in Hollywood in the 1940s and ’50s.

As a number of critics of block lists have pointed out, people can have their names added to a list by mistake, or due to an overzealous interpretation of what constitutes abuse or harassment. Since those lists can then be shared and used to fuel automated block bots and other services, appearing on such a list could cause a cascade effect, where that person winds up being tarred unfairly with accusations of abusive behavior.

In at least one case, a prominent feminist who herself had been the victim of a sustained Twitter abuse campaign—British writer Caroline Criado-Perez, whose case was used by many to argue that Twitter’s anti-harassment tools were inadequate—was added to a block list shared by a wide group of users. And as is the case with other crowd-powered tools such as Wikipedia, there isn’t really any means of appeal.

Defenders of the shared block-list approach such as veteran blogger and ThinkUp co-founder Anil Dash argue that no one’s free-speech rights are being infringed in such cases for several reasons, including the fact that private platforms such as Twitter aren’t covered by the First Amendment. They also argue that even if we are committed to free speech as a principle, that doesn’t give anyone a right to be heard.

Critics like MIT Technology Review editor Jason Pontin, however, argue that the whole point of supporting free speech is that we should do so even when those who are speaking are saying something horrible, otherwise the principle is meaningless. As Voltaire’s biographer Evelyn Beatrice Hall put it: “I disapprove of what you say, but I will defend to the death your right to say it.”

The problem, of course, is that tools like Twitter—massive, distributed networks that allow an unprecedented variety of speech from individuals around the world—have never really existed before, and so we don’t know exactly what to do with them or how we should behave. Is Twitter like the village square, as Dick Costolo has said? It sort of is, but then it’s also owned by a corporate entity, which has shareholders and fiduciary duties. And the problem of harassment is a very real one.

One good thing about crowdsourced or shared block lists, York says, is that it is better than Twitter choosing who should be blocked and who shouldn’t. “In general, I think these tools are much better than if we just let the company decide. That would be terrible. At least this is real community policing.” If nothing else, it’s clear that being the “free-speech wing of the free-speech party”—as Twitter has famously described itself in the past—is getting harder and harder.

About the Author
By Mathew Ingram
See full bioRight Arrow Button Icon
Add Fortune on Google for similar content.

Latest in Tech

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • TikTok icon
  • YouTube icon

Latest in Tech

Samsung wins $200 billion order to supply chips to Broadcom
AIChips
Samsung wins $200 billion order to supply chips to Broadcom
By Hooyeon Kim and BloombergJuly 25, 2026
2 hours ago
SK chair says Anthropic asked for supplies to make its own chips
AIChips
SK chair says Anthropic asked for supplies to make its own chips
By Ian King and BloombergJuly 25, 2026
2 hours ago
Nvidia CEO Jensen Huang denies the chip boom will go bust soon and actually utters the infamous phrase ‘this time is different’
Big TechSemiconductors
Nvidia CEO Jensen Huang denies the chip boom will go bust soon and actually utters the infamous phrase ‘this time is different’
By Jason MaJuly 25, 2026
5 hours ago
Sam Altman speaking to reporters.
AIOpenAI
AI safety experts say OpenAI’s rogue models may mean the company has already blown past its own internal red lines
By Beatrice NolanJuly 25, 2026
5 hours ago
DeepSeek said to tell backers of funding pause after viral posts
AIfunding round
DeepSeek said to tell backers of funding pause after viral posts
By Haze Fan, Pei Li and BloombergJuly 25, 2026
7 hours ago
SpaceX’s Starship V3 deploys most advanced Starlink satellites then pulls off best re-entry yet with splashdown so soft it floated in the Indian Ocean
Innovationspace
SpaceX’s Starship V3 deploys most advanced Starlink satellites then pulls off best re-entry yet with splashdown so soft it floated in the Indian Ocean
By Marcia Dunn and The Associated PressJuly 25, 2026
7 hours ago

Most Popular

The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'
Real Estate
The millennial generation is split in 2: an older crowd with boomer-style comfort, a younger set going 'back to the early 1900s'
By Nick LichtenbergJuly 25, 2026
11 hours ago
'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down
Economy
'The demographic dividend of the last 40 years is ending': J.P. Morgan says the world is running out of the two things that kept interest rates down
By Eleanor PringleJuly 24, 2026
2 days ago
Jensen Huang made his $172 billion fortune on AI chips. His family's $75 million gift to Vanderbilt argues art decides what technology is for
Big Tech
Jensen Huang made his $172 billion fortune on AI chips. His family's $75 million gift to Vanderbilt argues art decides what technology is for
By Sydney LakeJuly 23, 2026
3 days ago
An 11-year-old is cleaning his neighbors' trash cans for $10 each—he now has 100K followers as teens face the worst summer job market since 1948
Success
An 11-year-old is cleaning his neighbors' trash cans for $10 each—he now has 100K followers as teens face the worst summer job market since 1948
By Orianna Rosa RoyleJuly 25, 2026
13 hours ago
The $39 trillion U.S. national debt isn’t as high as Japan’s and Singapore’s relative to economy size—and yet it's still worse somehow
Economy
The $39 trillion U.S. national debt isn’t as high as Japan’s and Singapore’s relative to economy size—and yet it's still worse somehow
By Sasha RogelbergJuly 23, 2026
2 days ago
Jensen Huang just used his first ever X post to warn the AI industry not to make the mistake that software narrowly avoided in the 1980s
AI
Jensen Huang just used his first ever X post to warn the AI industry not to make the mistake that software narrowly avoided in the 1980s
By Nick LichtenbergJuly 24, 2026
1 day ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.