The thread that immediately precipitated his removal is still online; you can just go look at it:
https://www.facebook.com/garry/posts/10102671732962523?pnref...
(It's buried under Anisa Mirza's reply).
Unless it's your claim that trolling is a political stance deserving of protection, in which case we can all just agree to disagree about our definitions and move on, his support for Trump was not the problem here.