Many in the Jewish community are urging Mamdani to do more to ease their fears.
A federal judge has ordered the University of Pennsylvania to hand over records about Jewish employees on campus as part of an investigation into antisemitic discrimination.
The Tri-State area, home to the largest Jewish communities in the country, was on edge after Thursday's truck ramming attack at the synagogue outside Detroit.
Police are looking for the suspect who they say punched a 54-year-old man on a subway train and made antisemitic comments.
The rabbi, who was on the way to synagogue at the time, was not injured and was able to take a picture of the suspect.
Ye, formerly known as Kanye West, is apologizing for his antisemitic remarks and other outlandish behavior in recent years.