A police car was caught on camera driving into protesters following a Black Lives Matter demonstration in Detroit - with at least four people reportedly injured.
Ethan Ketner posted a clip on Facebook which shows the 4x4 vehicle driving through protesters who appear to have blocked its way.
According to Mr Ketner, up to a dozen people, including himself were struck by the "reckless driver", while one person was "trapped on the hood" before being "tossed" onto the road.
The video shows some at the scene on Sunday evening holding protest signs and banners while many are chanting.
With several people clambering onto the bonnet of the car it suddenly jolts forwards and some people fall backwards.
It then picks up speed and appears to swerve as one remaining person still clinging on is thrown onto the road.
The video ends with people screaming and many in the crowd sprinting after the police car.
Mr Ketner, a chef and member of Detroit Will Breathe, wrote on Facebook: "Detroit Police Department just ran straight through a bunch of our protesters.
"Myself and 10-12 others were struck by this reckless driver who somehow has a badge.
"Someone was trapped on the hood and eventually tossed as the officer swerved to throw him off."
He later added: "I'm waiting on updates about the guys on the hood.
"Medics are on the scene and have all injured people in their vehicles. We are marching back to the park together."
One person tweeted: "Police brutality as DPD plows through tons of protestors, roughly 3-5 injured including leaders from @DETWILLBREATHE.
