[themitigating]

If I ran a store that sold model trains and you can in and started yelling at something I shouldn't be able to kick you out?

You may say - "Well twitter is bigger" - There are competitors and you aren't forced to use it.

Or "I want to reach the largest audience" - Why should a private company spend its own resources to help you spread your message.

You came from a country without freedom of speech? How would it have helped if the government just kills its enemies or arrests them on bogus charges?