Donald Trump was booed at a Catholic charity dinner in New York City Thursday night after his gentle roasting of Hillary Clinton — seated just feet away from him on the dais — turned vicious.

“We learned so much from WikiLeaks. For example, Hillary believes that it’s vital to deceive the people by having one public policy and a totally different policy in private,” Trump said at the Alfred E. Smith charity dinner hosted by New York Catholic Cardinal Timothy Dolan at the Waldorf Astoria in Manhattan. “For example here she is tonight in public pretending not to hate Catholics.”

Every four years, the major presidential candidates have traditionally attended the event, which marks an opportunity to take a break from the nastiness of the campaign trail for a little light-hearted political humor.

But Trump may have missed the memo regarding the dinner’s tone.

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The GOP nominee started off with some humorous jokes, including the suggestion that if Clinton wins she will want him to become “either her ambassador to Iraq or Afghanistan” and a playful poke at his own wife Melania’s plagiarized convention speech.

“I really have to say the media is even more biased than ever before, ever,” Trump said. “You want the proof? Michelle Obama gives a speech and everyone loves it, it’s fantastic, they think she’s absolutely great. My wife Melania gives the exact same speech and people get on her case. And I don’t get it.”

Seated beside Cardinal Dolan, Clinton was seen laughing at Trump’s early jabs at her, including a joke about his threats to jail her during the second debate.

“We have proven the we can actually be civil to each other — in fact, just before taking the dais Hillary accidentally bumped into and she very civilly said: ‘Pardon me.’ And I very politely replied, ‘let me talk to you about that after I get into office,'” he said, to a big laugh from Clinton.

As his remarks grew increasingly political and hard-edged — such as “Hillary is so corrupt she got kicked off the Watergate commission. How corrupt do you have to be to get kicked off the Watergate commission?” — the crowd became audibly uncomfortable.

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During her time at the podium, Clinton took a few shots at Trump in return, including a joke about the controversies over his treatment of women.

“People look at the Statue of Liberty and they see a proud symbol of our history as a nation of immigrants. A beacon of hope for people around the world, ” she said. “Donald sees the Statue of Liberty and sees a 4. Maybe a 5 if she loses the torch and tablet and changes her hair.”

The Democratic nominee also mocked Trump for his campaign trail struggles with the teleprompter, and for his ties to Russia. “[Teleprompters are] hard to keep up with, and I’m sure it’s even harder when you’re translating from the original Russian,” she said.

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“I hope you enjoyed my remarks tonight, I said no to some jokes that I thought were over the line,” Clinton said, concluding the comedic part of her speech. “But I suppose you can judge for yourself on Wikileaks in the next few days.