The city has increased its presence in Muslim neighborhoods, sending staffers to visit mosques and build better relationships with imams and worshippers. Police officials have briefed community leaders on new counterterrorism procedures.
Other city officials have urged Muslims to report any hate crimes, the number of which, despite terror-filled headlines and the inflammatory rhetoric of some national politicians, is sharply lower in New York in 2015 than at this time a year ago.
De Blasio's speech at the Jamaica Muslim Center, or Masjid Al-Mamoor in Queens, is the most high-profile move the administration has made to calm jittery Muslims since the November 13 attacks that killed at least 129 people in Paris, and this week's slaying of 14 people in San Bernardino, California.
But it's far from the only step the administration has taken to reach out to Muslims, some of whom deeply feared discrimination after the September 11, 2001 attacks.
Teams from the mayor's office and city council have spent time at mosques and community centers, hoping to improve relations with imams who could also advocate city services, such as free pre-kindergarten and municipal identification cards, that would improve some Muslims' level of civic engagement and potentially ward off alienation.
NYPD officials said there has not been an uptick in bias crimes against Muslims since the Paris attacks. So far this year, there have been 14 hate crimes against Muslims, a 39 per cent decrease from this time a year ago, according to NYPD statistics. But officials acknowledge that some hate crimes go unreported.