Anarchists caused a riot in downtown Portland during May Day, effectively hijacking a peaceful rally organized by over 50 groups.
Koin 6 News caught much of the action live as it happened.
One of the reporters asked why the police were keeping back from the violent anarchists by several blocks.
Police have shown greater enforcement of the law during much more peaceful demonstrations in the past.
Over 25 of the anarchists have been arrested and the police are looking for additional suspects.