Context is very important here. Alex Jones was punished for "he tweeted out a link to a video in which he calls for his supporters to get their "battle rifles" ready for the media and others." which is not really trying to incite actual violence.

Some locations on earth the ability to communicate the need to stop violence is necessary. Ethnic cleansing being done by your government? Do you want the people to unite and stop that?

I really dont have a good answer and can see both sides, personally Id err on the side of letting people speak.