This video shows an Oakland, California police officer throwing a flash grenade into a crowd of Occupy Oakland protesters attempting to assist a fallen comrade, following yesterday morning's police raid on the Oakland encampment that the city says was for "health and safety" reasons. The specific concerns listed in an Oakland Police Department statement justifying the raid include "public drinking and intoxication" and smoking in flammable tents, as well as reported assaults and "intimidating behavior," sanitation and rat problems, graffiti, litter and vandalism. An alleged sexual assault was described by one prominent supporter of Occupy Oakland, Rachel Jackson, as "basically like the WMDs of our struggle here." The pre-dawn raid resulted in over 80 arrests. The most recent poll has 37% of Americans supporting the Occupy protests.