Police in Oakland fire on protestors

In Oakland, near SanFrancisco, Police have opened fire on protesters in the docks area, according to some reports they opened fire because the number of protesters was growing rather than in response to some violence.

CNN carries some pictures of the incident, as does The Washington Post.

More information about some of the 'non lethal' weapons, such as the 'sting ball grenade' can be found online.