Police confront demonstrators in Los Angeles -- they've arrested 50 people so far.
Hundreds across California are protesting a Missouri grand jury's decision not to indict a white police officer for shooting and killing an unarmed black teenager.
Ferguson, where the incident took place, was mostly quiet for the third night of protests, but the unrest has spread to other states.
(SOUNDBITE) (English) UNIDENTIFIED POLICE OFFICER SAYING:
"If you're here to disrupt the flow of traffic, to put people at risk, to get up on our freeways, run in and out of traffic, to attack cars by kicking them or with skateboards, we're not going to let you do that."
The shooting of Michael Brown has reignited debate about race in the country -- and many say it's time for change.
(SOUNDBITE) (English) UNIDENTIFIED PROTESTER SAYING:
"The system is wrong, we're trying to let people know if we come together and unite, we can change it."
Tensions between police and
