Well, the officer refused to answer internal investigators, plead the fifth, then resigned, then left the state.

I'm pretty sure the arrest has to do with another rally planned for today:

The rally, planned for 4 p.m. outside City Hall, is being organized by the Coalition Against Police Execution, a group that started on Facebook in the wake of the New Year's Day shooting of Oscar Grant by former BART police Officer Johannes Mehserle.

The group held a rally last Wednesday at the Fruitvale BART Station, ... When it was over, 105 people had been arrested. Oakland officials initially said 300 businesses were damaged, but they reduced that total this week to about 50.

Tags for this video have been changed from 'BART, Police, shooting, Oakland, Oscar, Grant, NYE, KTVU' to 'BART, Police, shooting, Oakland, Oscar, Grant, NYE, KTVU, Johannes, Mehserle' - edited by joedirt

Tags for this video have been changed from 'bart, oakland, cop, police, brutality, shoot, unarmed, back, kill, oscar grant' to 'bart, oakland, cop, police, brutality, shoot, kill, oscar grant, Johannes Mehserle' - edited by joedirt

Officer Johannes Mehserle -- The 27 year-old, two year veteran of the BART police force... shot a killed a restrained suspect in the back, lying on the ground


JOHANNES MEHSERLE who is still alive to see his child.
JOHANNES MEHSERLE who will probably not ever be convicted of his crimes.

Officer Johannes Mehserle -- The 27 year-old, two year veteran of the BART police force... shot a killed a restrained suspect in the back, lying on the ground