Re: no, just no.
"Why not?
The way to challenge hate speach is to let everyone see what these morons are saying and openly condem those views, present different perspectives and actively work against the hate.
Banning hate speach doesn't eliminate it, just moves it underground where it can't be monitored and challenged. Thus creating a focussing effect for those who might buy into whatever is being said. No one to counter the views espoused.
Freedom of speech means, well, exactly that, even if that speech offends some people."
So that is free-speech (I guess that is what you mean - speach?) without limits?
You are assuming that the audience will always be indifferent to the exhortations of purveyors of "extremist" views. However, what happens when the audience is manipulated? Group think and action is relatively easy to manipulate, you only need to look at the alleged actions of Facebook, or the modern product of many of our Universities and Colleges to see that that is the case.
You may want to look back at some of the developments of the last Century.