But what does the law actually say?

Newt Gingrich has recently said, arguing against the proposed mosque near the World Trade Center site, that "Nazis don't have the right to put up a sign next to the Holocaust museum in Washington." Everyone is wondering if, in saying that, he was equating Muslims with the Nazis; no one (at least no one I've heard) is asking if he's right about what the law actually says. And, by the way, he's wrong; the Nazis do have a legal right to put up a sign next to the Holocaust museum in Washington.