Whether you agree with the politics of author-scholar Norman Finkelstein, the polarizing subject of the documentary "American Radical," or not, there's no denying the guy's got resolve. This outspoken son of Nazi concentration camp survivors is so entrenched in the inflammatory case he's been making for years -- that Israelis and American Jews have exploited the Holocaust to justify their ongoing opposition to Palestine -- that it has clearly shaped and informed his entire adult life.