Washington: At least 45 people were arrested in the US city of Seattle after a Black Lives Matter protest turned violent, police said.
The protest held was one of the most tense of several rallies held across the country, the BBC reported.
Thousands of protesters had initially gathered in the city peacefully, carrying signs such as Feds go home and We are living in a police state and shouting chants of No justice, no peace.
A group then set fire to the construction site for a youth detention facility before smashing windows of a courthouse and nearby businesses, police said.
Authorities said rocks, bottles, fireworks and mortars were thrown at officers, and one of them was taken to hospital with a leg injury.