In May 2020, Minneapolis Police Department officer Derek Chauvin killed George Floyd by kneeling on the back of his neck for 8 minutes and 46 seconds. Spectator video of the incident showed Floyd saying "I can't breathe" multiple times. Despite his pleas, as well as a bystander exclaiming that the officer was preventing Floyd from breathing, Chauvin continued the restraint for two minutes and 53 seconds after Floyd became unresponsive, while three other officers watched.[16] "I can't breathe" became a rallying cry for the subsequent nationwide protests.[17] Protestors have adopted it as a chant.[18] In his first public speech on George Floyd's death and protests on June 2, presidential candidate Joe Biden began with, "I can’t breathe.