Milwaukee County Sheriff David Clarke was definitely in his element Monday night, delivering a rousing speech at the Republican National Convention.
Clarke walked out to a standing ovation and brought down the house with his opening line -- "Blue Lives Matter in this country."
Clarke — a Donald Trump supporter — also commended Monday's acquittal of Baltimore Police Lt. Brian Rice in the death of Freddie Gray.
"I often tell the citizens of Milwaukee and the cities and towns that I visit that safety is a shared endeavor, it starts with the willing acceptance of people to play by society's rules," Clarke said in his speech.
Clarke has been in the headlines the last couple of days. He got into a heated exchange with CNN's Don Lemon , and claimed he predicted the recent shootings of police officers as long as two years ago.
Trump addressed the Black Lives Matter movement in an interview that aired Monday night on Fox News Channel. He didn't make a specific reference to that movement. But he said some activists "are essentially calling death to the police — that is not acceptable."
The Associated Press contributed to this report.