These days, the term “anti-Semitism” is often misused. Simply, it refers to hostility to or prejudice against Jewish people.
The belief that present Israeli government policies vis-a-vis Palestinians is wrong-headed, cruel and counterproductive is a political and moral judgment, not evidence of anti-Semitism.
Similarly, protesting against current Israeli government policies toward Palestinians in Gaza and on the West Bank is not anti-Semitic. Most campus protest in favor of basic human and civil rights for Palestinians is not anti-Semitic… it is anti-Netanyahu policy.