When you sign up for any social media platform you agree to Terms of Service that you will not do X things on that platform. This is not censorship if you agree to not spread Hate Speech or rally a cause against a protected class. This is you violating your contractual agreement and being removed from the platform for it. You can continue to spout whatever you wish, but you are not entitled to a platform to do so.
If you think someone is being censored for failing to adhere to the contract they agreed to because of reasons I don't know what to tell you.
Indeed. Go to TheDonald and make a comment about how terrible Trump is with a bunch of evidence and you'll be banned out of there in 5 seconds.