An incident covered by helicopter, a person was hit by a car. From the helicopter video released online, there was no indication of how the person was hit by the car, however other video angles have surfaced revealing that the person provoked the incident. The person appeared to be walking in street, when a car approached and slowed down. The person then appeared to "hit" the car repeatedly, and would not move. Seconds later, the car charged forward while the person was in-front, knocking them down. Later emergency units responded, taking the injured person to the hospital. It is not clear if this person was a protester part of Occupy Oakland, and or the General Strike.
Some of the protesters and other individuals would argue that this may have been an attempt to discredit the protest.
Another angle.
This video below is a more in-depth look at the scene on ground, including someone throwing a drink onto the car, and a fight almost breaking out.