A doorbell camera captured the terrifying moment a car fatally struck a high school teacher and injured another pedestrian after it lost control following a highway patrol chase in Oakland, California.

The vast majority of police chases are completely unnecessary with modern technology and risk the lives of innocent bystanders. This was before anyone introduced explosive weaponry to the equation. The California Highway Patrol claims the driver of a stolen vehicle tossed a grenade out of the driver's side window during a pursuit through Berkeley last month.