With his wife, Dr. Jill Biden, standing alongside him, the former VP was in the middle of his speech at the Baldwin Hills Recreation Center when an unidentified woman stormed the platform.
What the woman was shouting was unclear as a man grabbed her from behind and dragged her away.
A moment later, another woman climbed up to the stage waving two handheld signs - a Biden 2020 campaign sign and another with an image of a cow and the words "LET DAIRY DIE."
DEVELOPING: More details will be added to this report as they become available.