Protesters have been rammed by a car in Indiana while demonstrating against an alleged lynching of a Black man on July 4th.
On Sunday Vauhxx Booker, a prominent voice for civil rights, claimed he had been the victim of a "hate crime" after he was attacked by five white men.
Footage of the attack has been widely shared online sparking protests on Monday calling for the police to arrest his attackers.
Towards the end of the protest in Bloomington, a man in a red Toyota drove into the demonstrators, striking at least two including one woman who was propelled onto the bonnet.
The Bloomington Police said the woman is believed to have been knocked unconscious when she was thrown from the car and suffered a laceration to her head. A 35-year-old man was also injured.
Police said they are investigating the incident.
In a Facebook post on Sunday, Booker, a member of the local Human Rights Commission, described the attack.
He said he was walking to a nearby lake to meet up with friends to watch the lunar eclipse when he was approached by the men claiming he was crossing private property.
"The individuals were calm for a moment then quickly became aggressive," Brooker said.
"Two of them jumped me from behind and knocked me to the ground. I tussled with the two and another one joined in, then two more. The five were able to easily overwhelm me and got me to the ground and dragged me pinning my body against a tree as they began pounding on my head and ripped off some of my hair, with several of them still on top of my body holding me down."
He said the men threatened to lynch him and claimed one said "get a noose" amongst other racial slurs.
The footage shared online shows Brooker on all fours, pinned against a tree and surrounded by the men, as others scream for the men to let Booker go.
He said police were called but they refused to arrest the men, only filing a report.
Booker spoke to protesters on Monday decrying systematic racism and saying the incident has "shaken me to the core", NBC News reported.