More than 5,000 people signed a petition, started last November, to ban Students for Justice in Palestine chapters in CUNY. Andrea Karshan, a student at the College of Staten Island, started the petition after members at different campuses chanted allegedly anti-Semitic comments at Jewish students during the Million Student March in November. One sign called for CUNY to divest from “Israeli apartheid.” SJP began in 1993 at the University of California at Berkeley. Since then, there are chapters across the country, including at CUNY colleges. The organization is controversial for criticizing Israel’s presence in Palestine. One tactic it uses is BDS, which means boycott, divest and sanctions. Karshan declined questions…