Several people have been arrested and the National Guard has been called in after major protests broke out in Louisville in the state of Kentucky, local media reports.
Masked protesters throw objects and light fires.
Protesters are protesting against the news that only one of the three police officers involved in the shooting of the black woman Breonna Taylor was prosecuted in March.
The police are not being prosecuted for her death, but for endangering her neighbors.
Two policemen were injured
During the night, two police officers were shot in the city.
The shooting occurred in connection with the two police officers going to an area in the city to investigate an alarm about suspected shooting, reports AP.
One of the two police officers is being operated on for his injuries, but the situation for both of them is stable, the police state.
A suspected perpetrator has been detained.b