The definition of anti-Semitism was at the center of a battle of words Monday involving campus protests about the Israeli-Palestinian conflict. This comes as some Jewish students say that protests against Israel’s occupation of the West Bank have had anti-Semitic overtones that they contend makes some American universities, including UC campuses, a hostile environment. Meanwhile, activists against Israeli policies, including some Jewish faculty and students, say such claims of anti-Semitism are an attempt to squelch any criticism of Israel.