That stuff already happens to people in the West, and people who visit non-Western but Western aligned countries. The fact of the matter is that if you are a Westerner, you are going to spend more time in the Western sphere of influence, of which Russia and China are not a part of.
I think the West generally respects and understands due process, rule of law and those general ideas. You will likely get a fair trial. Not so for some of the opposition.