美国参议员提议警察改革

procedure -n. a series of actions that are done in a certain way or order : an established or accepted way of doing something

accountability -n. an obligation or willingness to accept responsibility or to account for one's actions

chokehold -n. a method of holding someone by putting pressure on the person's neck to make breathing difficult or impossible

stain -n. something that causes people to have less respect for someone

lynch -v. to kill (someone) illegally as punishment for a crime