Not sure what your issue
The issue is these were his nutcase supporters. This is who he caters to and eggs on. When you say "fault of the right" it is him who is that right.
Now before anyone gets their panties in a knot the D's have nutcases also but different types. The big difference here is you can't say BLM/Antifa are X's supporters. This was 100% Trump supporters!!!
Not back to the issue of the text. They are getting hammered because the text showed real concern for what was going on but publicly, they were downplaying it or making up BS crap like antifa.
ETA: I remember the discussion when a bunch of his redneck supporters ran the D bus off the road. Most everyone downplayed it as them just having fun. By most everyone I mean members here. It was close to ending the same way as this riot did.