For well over a decade, John Cusack has been one of America's most politically active actors.
He met whistleblower Edward Snowden in Moscow and coauthored a book about this with Indian writer Arundhati Roy.
Cusack has also slammed the Obama administration for using drones to kill people.
And he has suggested over Twitter that Donald Trump should be removed from office due to the emoluments clause in the U.S. constitution, which prohibits the president from receiving gifts from foreign powers.
But last night may have been the first time that Cusack felt under attack from police.
He was videotaping a burning car in Chicago when a large number of baton-wielding cops approached him.
According to Cusack, they "gently tuned up my bike with their batons".
You can see and hear some of what was said below.
Chicago, like many other cities, was the scene of a gigantic protest against last week's police-involved death of Minnesota resident George Floyd.
A police officer, Derek Chauvin, has been fired and charged with third-degree murder and manslaughter after he was videotaped with his knee on Floyd's neck. Three other officers watched as Floyd pleaded to be released.
While the vast majority of this weekend's demonstrators were peaceful, there were also many fires started and windows smashed.
Some have suggested that white supremacists may have contributed to the mayhem.
Here's the scene in Nashville, where the city hall was set ablaze.
Below, you can read some of the comments and reports being passed around over social media.More