New York City Mayor Bill De Blasio is on a roll when it comes to attacking the president. On Thursday, he stated that Trump will not be welcome back into his home city after his presidency is over.

This is quite a bold statement considering NYC has always loved Trump, before he was president, and he still has many supporters there.

"When his presidency is over, really soon, he will not be welcome back in New York City!” De Blasio said, adding that Trump doesn't "understand the city" despite the fact that he built his real estate empire there.

De Blasio tweeted on Friday, "Donald Trump seems to have a lot to say about New York City lately. So I issued him a challenge last night."

This tweet was in response to Trump calling him out for not protecting New York City police officers.

Fox News reports:

Former New York City mayor Rudy Giuliani, who also serves as Trump's attorney, also called out De Blasio following multiple incidents in which police officers were doused with water.

De Blasio responded to the attacks by attributing decreasing crime to Trump's departure from the city. He also told Giuliani he didn't tolerate disrespect for New York police officers and claimed the former mayor helped create a divide between the police and city communities.

"The truth is crime's NEVER been lower in New York City and that's because we're bridging the divide between police and communities — a divide @RudyGiuliani helped create," De Blasio tweeted.

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