WASHINGTON — Forget alternative facts — Samantha Bee is pioneering the alternative dinner. And even though luminaries from the media and Hollywood were on hand to schmooze and talk politics, it was “Not The White House Correspondents’ Dinner.”

The event was billed as a tribute to journalism, but it was also an opportunity for Ms. Bee and her guests to mock President Trump at every turn.

“You continue to fact-check the president as if he might someday get embarrassed,” Ms. Bee, who hosts the weekly talk show “Full Frontal With Samantha Bee” on TBS, told the crowd of 2,600 at DAR Constitution Hall in Washington on Saturday afternoon. “Tonight is for you.”

Hundreds of journalists, including CNN’s Jake Tapper, attended the event billed as an alternative to the official White House Correspondents’ Association dinner, which took place later on Saturday. Proceeds from Ms. Bee’s event were to benefit the Committee to Protect Journalists.