Multiple police jumped on the man, wrestling him to the ground as he fired a super soaker water gun at Knowles containing what appeared to be glitter-colored bleach in response to the talk simply titled, "Men Are Not Women". The police later said they responded to what they thought was a bleach attack in progress, given they could smell it — further triggering a police attempt to evacuate the stage and exit area.
Dramatic footage caught much of the incident partway through the presentation, which began escalating as up to half the room was filled with hecklers and far-left protesters attempting to shut the event down.
Hecklers consistently interrupted Knowles by shouting him down and began to exit en masse, after which the young man with the liquid substance approached the stage. Knowles began addressing the disruptors by saying, "I know, you're so oppressed, my dears. I know, life is so hard for you. You have to live in the richest, most equitable, most just country in the history of the world. You have to get a college education; you have to voluntarily go to lectures; it's so awful. I can't imagine."
This is when chaos ensued. Video of the incident show at least 3 campus security officers trying restrain the attacker, with another two police rushing into the room.