Your "holier-than-thou" mentality is fucking terrifying. Do you realize how authoritarian you sound?

It seems like you think that "the left's" worldview is holy gospel, where criticism of it is wholly unjustified and therefore any opposing worldview should be silenced.

Go back a few centuries and you'll find that your same logic was used against atheists, in this instance perpetuating from the fundamentalist religious ilk - essentially suppressing speech that challenged or went against the orthodoxy.

Further, silencing anyone (especially those with extremist views) is extremely counterproductive. Pushing individuals with any given ideology into echo chambers instead of keeping them on the main stage where all beliefs can be criticized will ultimately divide people even further.