Biden Infrastructure Bills Will Come Up For A Vote In The House Next Week - The Last Word - MSNBC
House Speaker Nancy Pelosi is urging patience and said she’s very encouraged by negotiations on the two-track Biden infrastructure bills, with a vote planned for sometime next week. Congresswoman Debbie Dingell tells Lawrence O'Donnell that failure is not an option. “If we don’t get this figured out, if we don’t deliver, absolutely everybody is going to be in trouble. I don’t think it’s gonna be a pretty weekend, but we have no choice but to get this done.” Aired on 09/24/2021.
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Since it wasn't included in the caption provided. She apparently tried to shut Greene down. As for Greene, she apparently has nothing else to do since she's been removed from any committee assignments - so she attempted to disrupt the Speaker's press conference and was harassing other Democrats who were there. There must be some way of removing her altogether. 
I turned up a number of videos on it at youtube, but unfortunately I don't think anyone captured the actual scene with audio.
It was about abortion.
Though Lawrence O'Donnell said that he didn't want to show what happened to give her the exposure - which was obviously what she was after to upstage the Democratic press conference. 
This is what I ran across posted here:
@MTG and @RepDebDingell just got into screaming match on steps of Capitol after MTG heckled Democr
https://democraticunderground.com/1017683481
Greene heckles Democrats and they fire back on Capitol steps
https://www.democraticunderground.com/10142804844