It's hard for me to feel sympathy for Trump and Trumpers. Sure, it's their right to get together and yell loudly, and I wish that these protesters would stop interfering with Trumpers' right to yell loudly. But Trump has requested the Piper, and the Piper now needs to be paid. You want to build a campaign off of tension, vitriol, and "othering" certain groups of people? Okay, that is your prerogative as an American. But you'd best be willing to face the consequences too. You've denounced and shat upon the barbarians, and now the barbarians are at the gates.
An obnoxious guy at a party is free to drink and insult his way through, but if another guest decides to punk him out as a result, it should surprise no one. You can call the law and have the assaulter arrested, but very few are going to feel much sympathy for the victim, as he made one personal insult too many.