Many conservatives believe that social media companies are biased against their views. This includes Donald Trump, who last year accused Twitter of “shadow banning” Republicans, and promised to “look into this discriminatory and illegal practice.” A few months later, Twitter CEO Jack Dorsey made a categorical denial of any bias while testifying before Congress:
Let me be clear about one important and foundational fact: Twitter does not use political ideology to make any decisions, whether related to ranking content on our service or how we enforce our rules. We believe strongly in being impartial, and we strive to enforce our rules impartially.Recently, Mr. Dorsey appeared on two different podcasts, on which he similarly denied any bias against the right.
Not everyone is convinced. A June, 2018 Pew poll found that 72% of Americans believe that social media companies censor views they don’t like, with members of the public being four times more likely to report a belief that such institutions favor liberals over conservatives than the opposite. Podcasters Joe Rogan and Sam Harris both received backlash from their respective audiences for not pressing Dorsey hard enough on the censorship issue.
Until now, conservatives have had to rely on anecdotes to make their case. To see whether there is an empirical basis for such claims, I decided to look into the issue of Twitter bias by putting together a database of prominent, politically active users who are known to have been temporarily or permanently suspended from the platform. My results make it difficult to take claims of political neutrality seriously. Of 22 prominent, politically active individuals who are known to have been suspended since 2005 and who expressed a preference in the 2016 U.S. presidential election, 21 supported Donald Trump.
I began my analysis by compiling a list of every prominent individual or political party known to have been banned from Twitter since its founding. As a proxy for prominence, I used the criterion of whether the ban was important enough to warrant coverage in mainstream news sources. With the help of two research assistants, I searched both conservative and liberal media sources.
It is possible that I missed certain cases. In order to ensure reproducibility, I have made the data on suspended individuals and groups available online. And I invite readers to contact me if I missed any cases or made any errors. But given the wide variety of sources we used to compile the database, it is unlikely that any oversights would be substantial enough to meaningfully change the results.
I included only those cases in which the identity of the banned individual or entity was clear. Sometimes, Twitter removes an account because a user is thought to be engaging in a program of disinformation—for example, accounts allegedly run by agents of the Russian government that purport to identify with one side of the American political spectrum. To exclude such spurious cases, I designed my own database to include only unambiguous cases of identifiable individuals or organizations from English-speaking western democracies believed to be engaging in political advocacy in good faith. I counted individuals who are primarily known for their political activism, such as Milo Yiannopoulos; and others who are famous for other reasons but who also regularly comment on politics, such as the actor James Woods. As my main interest is political bias within the U.S. political spectrum, I also excluded terrorists and other Islamic extremists such as ISIS supporters.
Twitter debuted in 2006. Yet I could not find a case of the company suspending or banning a prominent person before May 2015. While this may be due to deficiencies in reporting, it also may reflect Twitter’s claim at the time that it was “the free speech wing of the free speech party.” The following chart shows the number of monthly suspensions from 2015 to January, 2019.
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