Hate speech, is protected speech.
If the government has, in any manner, infringed on your Freedom of Expression, Speech, and/or Association, get in touch with your local ACLU affiliate.
https://www.aclu.org/about/affiliates?redirect=affiliates
There are people there who can help you not only with "next steps", but throughout the entire process.
But please realize, they can't help you get your twitter account back, because Twitter has rights too.
I find this extremely hard to believe.
"White people" are the only group it is socially acceptable to be racist towards.
Sure, but this has nothing to do with hate speech and is in fact completely orthogonal. There is hate speech that doesn't (immediately and directly) incite violence, and there is non-hate speech that does.
Trump's comment, for example, was inciting violence, I agree. And I agree that it shouldn't be allowed. But it wasn't hate speech. So why are you bringing it up in response to a comment about hate speech?
"Hate speech that incites violence" is not "hate speech". I don't know why you are trying to force the connection between hate speech and violent threatening speech.