At least 7,500 people were involved in the riot in Oakland.
"Free Mohamed Noor!" one of them shouted.
The Portland Police tweeted for people downtown to flee as it is not safe.
Rioters have been blocking traffic while looting dozens of local businesses.
The man pointed out that there are people of all races who have "worked their f-cking life off" to build their businesses.
Grab some popcorn.
Three Detroit Police officers have also been injured and multiple DPD vehicles have been damaged.
Vandalism is taking place all over the city, including at the Police Department.
The shocking scene aired live on CNN.
The rioters had been throwing cement at the police.
