No, “they” shouldn’t outlaw it.
The scary part here is not the speech itself, but who is “they”? What do “they” believe and how far will “they” go after this.
What would “they” consider next to be outlawed. Pretty soon everyone speeks the way “they” want them to.
Should KKK rallies be outlawed?
What about Black Panthers?
I’m offended by gay pride parades. Are they going to ban those too? They don’t want to discriminate do they? Hey, let’s ban anything that offends anyone...
How about the democratic convention?