There was an old commercial for some stomach product were the tag line was "Anything you eat can turn on you." So too with law.
People in a persecuted minority objecting to a law that protects them. Ok, so it seems to you now, but it could sure be turned against you real quick also. Big trans rights trial going to happen in SF. God no, we can't let that happen, so move it to rural Ohio and get the verdict you really want. Don't think it would not happen. It already has in many cases, in fact, it happened in you very 'proof' case.
Aside from the entire Constitution deal, it also amounts to venue shopping. This happened years and years ago now when Harry Reams was put on trial in Kentucky for making an obscene movie that violated local standards of decency. Trouble was old Harry lived in LA, and the movie was made in the LA area. So, why no trial in LA? Because they knew he wasn't going to get convicted in LA. No way. So, off to Kentucky.
So too with the King trial. Had that been done where it should have been done, i.e. - in LA itself, the outcome would have been different. Those cops got off in large part because the trial was moved out of LA and into Simi Valley, perhaps the whitest place in Cali.