Bernie did address this last time he ran. It didn't stop anyone from doing anything, and unfortunately anybody who expresses their political views on an open forum is probably going to get a sound beating. I mean for god's sake, you can't even say you went to try the new vegan burger at Burger King without getting ripped a new one by 5,000 people. Is it right? No. Is it an unfortunate part of online "discourse?" Yep. If you really think Bernie addressing this is going to do anything, you're woefully naïve. The mainstream media is running with this Bernie bros narrative because they have little else to discredit him on except calling him a commie, and that's going to get old fast. Literally every candidate is going to have trollish supporters, and Bernie seems pretty popular, hence more trollish supporters. There's jack shit he can do about it, and he has much bigger issues to focus on.