"But some opinions do not deserve respect."

REALLY???? And which Big Brother or Fuhrer or Grand High Inquisitor gets to decide which opinions those are?

And how would you feel if the force of their disrespect was brought down to bear on your opinions?

"We don't tolerate racist or sexist or bigoted opinions, for example."

Ach, NEIN! As a matter of fect, vee do not tolerate qvite a broad RRRange uff zees kind uff un-accEPTable opinions zat vee, in our visdom, haff decided ARE unaccEPTable! Ze list of zem grows daily, in order to make society safer for decent people.   Und vee haff vays of dealink viss people who are foolish enuff to express zem (ze bad opinions) in public. Ya! Zere is alvays ze ruination uff ze carreer und ze possibility uff legal achsuns und even imprisonment! Zo you bedder keep your bad, bad opinons strictly behind a closed set of lips, mein herr.

Chust buy our liddle official rule book. In it iss a list uff all ze opinions vich are not to be respected...or permitted. Vee haff vays to shut you up. Bedder believe it.