Washington (CNN) President Donald Trump promoted a false smear of Democratic Rep. Ilhan Omar on Wednesday.

Trump amplified a tweet from comedian and conservative commentator Terrence K. Williams. The text of the tweet -- which Williams later deleted -- claimed that "Ilhan Omar parties on the anniversary of 9/11." A video showed footage of the Minnesota congresswoman dancing; Williams said in the video, "Girl, what in the world were you celebrating on the anniversary on 9/11?"

She wasn't celebrating on the anniversary of 9/11.

Facts First: The footage of Omar dancing was from Friday, September 13. She was attending an event, called : The footage of Omar dancing was from Friday, September 13. She was attending an event, called Breaking Concrete Ceilings , connected to the Congressional Black Caucus Foundation's Annual Legislative Conference.

In response to Trump's tweet, Omar tweeted : "This is from a CBC event we hosted this weekend to celebrate black women in Congress. The President of the United States is continuing to spread lies that put my life at risk. What is Twitter doing to combat this misinformation?"

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