I can't say for sure; only repeating what I read elsewhere because the only person I saw receiving CPR (EMTs pumping her heart) was a rather overweight woman in a white top and black pants. It only showed up for a few seconds on some of the videos. You couldn't see her face.
I also caught a millisecond glimpse in the crowd of the revolting socialist professor Cornel West, academia's counterpart of Al Sharpton.
And I thought the one I saw was the man with the large tattoo on his back vertical over the car.