[ruralvoter]

This is a short explanation. There are many news articles about the original protest earlier this week.

http://latimesblogs.latimes.com/lanow/2011/08/bart-shut-down-protest.html

“People were angry that the transit agency cut underground cellular phone service for three hours last week in an effort to quell a protest over alleged BART Police brutality and the shootings of Charles Blair Hill and Oscar Grant by transit police.”

[Oiao]

If you want to listen to the BART and SF Police broadcasts, use this link.

(note, scroll down and click on the icon next to the channel you want to listen to. You can listen to more than one at a time).

http://www.radioreference.com/apps/audio/?ctid=220

[HerbieHoover]

People were angry that the transit agency cut underground cellular phone service for three hours last week

Boy, were the transit police's faces red when they found out that "cutting cellular phone service" didn't disable those inconvenient cameras....