I fight fascists not because I will win, I fight fascists because they are fascists.
Only the non violent ones...which is most of them.
If people are allowed to act on the right to free speech, one is allowed to exercise his/her right to protest, especially if the speech is basically threatening speech to one's nationality/race/religion/etc.
Nobody has a right to try to disrupt someones attempt to gather, hear from candidates and speak freely. No matter how crazy they are. It's a sad, ugly time in American politics and actions like these only make the environment and the split between the people more dangerous. People are way over reacting. Trump is an absolute lunatic. He may be able to win the republican primary, but thats only because its a party full of idiots. He stands no chance at winning an actual national election for president of the United States. However, I do feel like I'm living in Idiocracy sometimes.
I'm anti-fascist. Trump isn't a fascist, but the protesters are.
Trump is not a fascist or a racist. The protestors are.
If they were simply expressing their right to free speech rather than trying to take free speech away from Trump and his supporters then yes it would be okay. But they are disruptive and sometimes even violent, and try to start fights and make the Trump supporters look violent and intolerant.