After WWII, the Allies demanded that the Germans ban all use of the swastika, Nazi insignia, and Nazi slogans.
How is that different from banning "hate speech"?
Personally, I do not care much about banning hate speech. People can listen to whatever idiot they want to, but there should be some sort of right of those with opposing views to use the PUBLIC airwaves to present them.
The fact is that the right wing is competitive, dogmatic and operates as a heard of pack, and this is far less true of the Left. I taught at five colleges and universities in my career and NEVER did anyone tell me what I should say to students regarding political views, other than to remind them to vote. Never HOW to vote, just to vote. And even that was seldom mentioned.
The story about how Academia brainwashes students was entirely untrue at every college or university where I taught.
I know at least a dozen people who get all their opinions from ideologues like Limbaugh, Hannity, O'Reilly or some other Fox "news" blatherer, and they always mention where they heard these opinions. Colleagues on the left, however, rarely quote anyone when they discuss their opinions of events. I may have spent a total of five hours in the last 30 years listening to Air America or some other dedicated left wing broadcaster. Mostly, I listen to CDs and NPR, which always presents not "both sides" of an argument, but MANY sides. If you would listen to Diane Rheems, you would note that she usually has two or three people commenting, and then takes calls from listeners, which present many opinions. Nearly all of what right wingers say about NPR and PBS is crap they heard on Fox and unrelated in any way to the truth.