That is what jews will call him:

Roger Waters is the most famous rock star to have publicly supported the campaign for boycott, divestment and sanctions (BDS) against Israel.

A founder of Pink Floyd — a British rock group which has sold more than 250 million albums — Waters decided to become active in the international Palestinian solidarity movement following a trip to the West Bank in 2006. Shocked by the oppression that he witnessed, Waters spray-painted the words “we don’t need no thought control” — a line from one of his biggest hits — on Israel’s wall.

More recently, Waters has served as a juror on the Russell Tribunal on Palestine, an initiative aimed at drawing attention to how Western governments and companies aid Israel’s violations of international law. In that capacity, he addressed the United Nations during November last year.

Visiting Brussels for the tribunal’s final session, Waters said he would explore the idea of releasing a single urging musicians not to perform in Israel. He intends to discuss this project with Steven Van Zandt, the guitarist in Bruce Springsteen’s E Street Band, who assembled many well-known musicians to record Sun City, a protest song against apartheid in South Africa during the 1980s.

http://electronicintifada.net/content/boycotting-israel-way-go-says-pink-floyd-legend-roger-waters/12287