Democrats keep screaming about McCarthyites every time a Ted Cruz steps up to oppose them. But they may have one in their own midst in the punchdrunk form of Rep. Alan Grayson. Grayson sent out a fundraising email accusing the Tea Party of being the KKK this week, an email that even used a burning cross to spell “Tea Party.” The over-the-top email has attracted criticism from all over — even some Democrats have found it to be a bit too much.

But Grayson has not backed down. Today he appeared on Martin Bashir’s MSNBC show and, naturally, was asked about that inflammatory email. Grayson not only did not back down, he ended up accusing Martin Bashir — this guy –

British TV reporter Bashir files

of “collaborating” with the Klan.

Seriously. He ends the clip below admonishing Bashir, “The point I’m making is that if you don’t speak out against [racism], then in effect, you’re collaborating with it. And, in fact, if you give someone like me a hard time for speaking out against it, then maybe you’re collaborating with it.”

Exit question: What’s the deal with Grayson? Is he a cynical exploiter, does he sincerely believe the dangerous nonsense he peddles, or does he have a mental disorder? It’s clear that he is no run-of-the-mill leftist when even MSNBC thinks he’s nuts. So what’s his deal?

If he’s sincere, isn’t that the worst of the possible alternatives?