If you’re an Elizabeth Warren fan or really if you’re just into facts, you gotta watch this. It’s Elizabeth Warren going on CNBC’s Squawk Box, defending her plan to bring back a new version of the Glass-Steagall Act. It’s maybe the best example of the sort of matter-anti-matter reaction that happens when someone who actually knows some history and policy makes first contact with a gaggle of ignorant CNBC yakkers. Video after the jump …