I've watched the news footage of the worst of these incidents and there should have been arrests made for disorderly conduct.
Everyone has a right to attend a public meeting and try to ask a question. Starting a riot is something else. Shouting and drowning out the speaker is something else. Taking the podium and not letting anyone else get a word in is something else.
Thuggish behavior is what I am seeing, and it won't enhance the goals of those who engage in it. It just makes them look like fools. What is being done is extremely inappropriate, and anti-democratic.
Think Brown Shirts in the early 1930s Germany.