London Mayor Sadiq Khan singled out Israel for criticism in a Muslim holiday greeting his week, and, ignoring Hamas, suggested the Jewish state was guilty of “betraying humanity” by killing Palestinians in Gaza.

The March 29 remarks by Khan, who is a Muslim member of the Labour Party, prompted strong-worded pushback by British Jewish community groups.

“More than 50,000 Palestinians have been killed in Gaza as a result of Israel’s ongoing military campaign, including more than 15,000 children,” Khan said in his greeting for Eid al-Fitr, a joyous holiday that marks the end of Ramadan. The “appalling suffering and killing that continues in Sudan and Palestine” were “betrayals of humanity” that “tempered” the holiday’s joy, he added.