The Issue: Mayor Mamdani’s support for the protesters at the riot outside Park East Synagogue. Your article on the anti-Israeli mob attacking police officers at Park East Synagogue is both scary and a sign of things to come in New York ( “Zoh ♥  Synagogue Riots,” Editorial, May 7). Mayor Mamdani said nothing about how openly anti-semitic young Democrats — who support Hamas and hate Israel — caused a riot. It amazes me that New Yorkers voted for this. But I’ve known many Holocaust survivors, who