I spoke with Sergeant Yamaguchi, Star# 1976. He said they are working with the OccupySF people and that the SF police have cooperated with their requests including setting up porta-potties and hand washing stations, etc.

He said the violence and zero-tolerance attitude by the police was started after a possible "black-bloc" group managed to infiltrate the movement and occupy with them. He said the OccupySF people are not sure who they are or what their agenda is.

He said this group has been antagonistic, has thrown liquids at the police and has thrown a couple of punches at police. He made it sound like these isolated incidents should somehow justify the riot gear and brutal crackdown on the whole OccupySF movement that SFPD has used.

This is what I was just told by a police representative who said he was acting as spokesman for the PD right now.