See Yvain's post on Schelling Fences on Slippery Slopes.

This is not a blanket reason to defend all ideologies against censorship. The analysis of many religions also implicitly assumes that there is no cost to tolerating competing religions, whereas there is a definite cost to hearing out many of the worst political ideologies.

It's almost as if the slippery slope works both ways. If you can't filter anything, your energy is drained by a thousand paper cuts.

You do realize that most people have the same opinion about the Singularity?

I wasn't aware that the general public was angry about Singularity nerds. I was talking more about like teenage neo-nazis. Extremely high probability to contribute nothing, piss a bunch of people off, and waste all our time.