Have to be intolerant of intolerance or you lose freedom and free speech. We as a society have to decide that intolerant speech that tries to remove rights from certain demographics is in fact harmful and evil and intolerable.
We're not talking about academic debates here or hypothetical arguments. Folks are actively working to reduce the rights of others, and in some places they're winning. Advocating to reduce rights of others is not okay.
Normally I would agree censorship is not the answer. However without limits, we will see hate gain ground. Part of being a society is setting limits of acceptable behavior, we can't shit in the aisle at the grocery store, we can't propagate hate speech, both of these rules (should) exist to protect ourselves as a group. Pretty simple stuff.
How do you think those people got power and how do you think those rich people keep their money? It's not just the illuminati in the background. They use free speech to convince people that their problems are caused by someone different, not the guy on the microphone robbing them blind.
I don't think it's a controversial statement to say fuck Nazis, we literally fought an entire war to make that statement. They don't get to have a podium anymore, because their ideas are evil and harmful to others