Sen. Smith: How many times must a Black man ‘be murdered at the hands of law enforcement?’

Sen. Tina Smith tells Lawrence O’Donnell that protesters in Minnesota are feeling “exhaustion, grief, anger and frustration” over another killing of an unarmed Black man by police. She says the system of policing that leaves communities of color feeling “over-policed and under-protected” has to change and hopes that Congress can “find the will” to pass meaningful police reform legislation.