"We don't want to see one officer charged," Killer Mike said. "We want to see four officers prosecuted and sentenced."

As Republicans work to maintain their control of the Senate in November, they're looking to flip seats in some key battleground states. That includes Michigan, where two challengers are looking to unseat incumbent Democratic Senator Gary Peters. Riley Beggin, a political reporter for Bridge Magazine, spoke with CBS News about the contest.

Protests rage across the country over the death of Floyd, a black man who died in police custody.