Generally speaking, there are two avenues people have to change quote-unquote undesirable behavior: legally and socially.
Legally, we should vociferously oppose any restrictions on speech, including hateful speech. This is a pretty banal point; most people not to the far left or right can agree on it.
Socially, I think it's pretty clear that we need not tolerate a lot of speech that should be legal. Milo Yiannopolous is free to spew his garbage, but we have no obligation to hear him out, or let him speak at our schools or events. Freedom of speech does not mean we have an obligation to let people who mean harm speak unencumbered. We should protest and block them however we can.
Legally, we should vociferously oppose any restrictions on speech, including hateful speech. This is a pretty banal point; most people not to the far left or right can agree on it.
Socially, I think it's pretty clear that we need not tolerate a lot of speech that should be legal. Milo Yiannopolous is free to spew his garbage, but we have no obligation to hear him out, or let him speak at our schools or events. Freedom of speech does not mean we have an obligation to let people who mean harm speak unencumbered. We should protest and block them however we can.