New York City is the safest big city in America, Mayor Bill de Blasio said Monday during an interview with MSNBC’s Geoff Bennett.

“The NYPD very, very consistently deals with quality of life crimes, hate crimes, the smaller things like graffiti for sure,” de Blasio said, adding “Look, this is the safest big city in America. I’m very proud of what the NYPD has done.”

His comments were in response to former New York City Mayor Rudy Giuliani’s scathing criticism on Twitter Sunday:

Possibly the worst Mayor in NYC, de Blasio, has watched anti-semitism rapidly metastasize, like a cancer, & is too unconcerned or lazy to “nip it in the bud.” Otherwise called Broken windows theory, which should be brought back. A COWARD in that he has yet…. — Rudy Giuliani (@RudyGiuliani) December 30, 2019

“A COWARD in that he has yet to condemn anti-semities [sic] in his own party who support BDS & similar movements, who’s [sic] main objective is to destroy the Jewish Homeland,” Giuliani wrote.

“As Mayor I got on anti-semitism at the earliest possible moment, the attack on Ari Halberstam. I didn’t ignore a dozen or so acts & let dangerous people out on bail who were a threat to citizens,” he stated, adding, “My record on anti-semitism is 35 years old, prosecuting ex-Nazis.”

Saturday, five Jewish people were stabbed during a Hanukkah celebration in Monsey, New York, according to Breitbart News.

Thirty-eight-year-old Grafton Thomas was arrested by New York Police Department (NYPD) officers and was “found with blood all over his clothing and a strong smell of bleach in the car, like he was trying to destroy evidence,” said Rockland County Assistant District Attorney Michael Dugandzic.

During an interview on MSNBC’s Weekends on Sunday, de Blasio appeared to blame President Trump’s rhetoric for Saturday’s horrific attack.

“It’s not a time for a partisan discussion, but it is a time to say some of the most hateful speech is emanating from Washington, D.C. What we need our president to do is be a unifier, a calming positive voice, reminding us of what we have in common as Americans,” the mayor said.

“That’s what presidents have done for generations. We’ve missed that. And the hateful speech even if it’s not inciting specific violence, let’s face it, we have seen these violent forces emboldened. We saw it in Charlottesville. We’ve seen it all over the country,” he concluded.