Images captured at the event show Trump with blood coming from his face as he raised a fist in the air. One of the most widely shared photos was captured by Associated Press chief photographer Evan Vucci.
"The moment I heard the shots being fired, I knew that this was a moment in American history that had to be documented. It's our job as journalists to do this work," said Vucci.
"Being a photographer, you have to, have to be there. I can't write about it later. I can't go back in time and get a redo. So you have to do your job."