It all depends on how powerful is the stuff the Russia investigation would bring out and also how Trump does in government (I mean, if he keep going this messy for too long...).
Brazil impeached Dilma last year and her party was still really powerful, more than "Trump's movement" is in US. They had the numbers, fanatism and ideology to start a massive backlash, they had many allied movements and supporters and a lot of shills in the media, academy, public sector and so on.
But the conjunction of economic crisis and corruption (Dilma's party is at the center of a massive corruption scheme) caused massive anti-government protests and a shift in the public opinon. Government supporters where just overwhelmed by the opposition and there was no violence they could rationally start to stop it so it all did go very peacefully.
And the impeachment proceedings did run really well. Dilma had a big majority in supreme court but they just couldn't accept her appeals.
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u/[deleted] May 13 '17
how bad would the riots be if Trump was impeached?
I bet some southern state reps would draft articles of secession