I never claimed they were planning to extradite someone, just that even in the US, free speech has its limits. Check out this post I wrote at roughly the same time to someone else:
Even in the US, you can be sued civilly for hateful comments and jailed for comments that could be construed as inviting or inciting violence.
I don't know the full story, the tweets are gone and the BBC didn't reproduce them.
It really seems like everyone here (including in the other thread) is trying to read more than what I wrote. Both you and the other person I was talking to used the word "crime", when I never remotely hinted at calling it a crime.
outside of obscenity, defamation, incitement to riot, and fighting words.