1) The Clint Eastwood case seems to be a fake account: http://nypost.com/2016/11/10/clint-eastwoods-twitter-account..., which doesn't entirely answer the question of why it was banned, but definitely muddies the waters. Do you have an example of someone not potentially impersonating a celebrity?

2) The Wikipedia page primarily concerns cases where Twitter is ordered to engage in censorship by other countries, not Twitter choosing to censor opinions on its own . I wish they would tell Ergodan where to stick it, but that's not the same as them posing a threat to your speech or mine (assuming you're not from Turkey).

Let me ask you an unambiguous question. I am a citizen of the United States of America, a country with a strong tradition of freedom of speech. Can you offer me any reason to fear that I am going to be censored by Twitter for expressing an opinion (liberal, conservative, fascist, even)? To be perfectly clear, and avoid confusing matters with the issue of harassment, say that I do not @-mention other users.