Arrests were almost exclusively for charges of failure to obey a lawful order, Denver police said, but some included interference with police authority, unlawful throwing of projectiles, and obstruction of streets.

Demonstrators protesting the Trump administration clashed with Denver police as thousands marched downtown, with some participants throwing projectiles at officers.

The rallies this week sparked by immigration crackdowns in Los Angeles has renewed questions about whether Denver police have learned from past use-of-force violations.