I think the bigger blind spot the left has is that they're totally unable to see the real danger that Islam presents to us. Bring it up, and they'll immediately put you in the "racist" box and discount everything that you say.

Islam is a genuine threat. But it's a forbidden topic, because idiotic leftists can't discuss problems with other cultures or races without going into some kind of seizure and shouting "racist!!! racist!!!!".

Like you, I used to be a leftist but can no longer associate with these utter morons.