That's a huge number. I'd love to know how many of those 300 are innocent bystanders. The fact that people involved in the chase (i.e. those running away) lose their lives seems like it's part of the risk.
Citation required. The language seems intentionally very vague and inclusive, which seems to be supported by-
http://www.nytimes.com/1992/12/26/us/alarmed-by-deaths-in-ca...
"Experts say there are few national figures on police pursuits. National Highway Traffic Safety Administration figures, based on reports from police departments, show that 305 people died in pursuits in 1991.
Of these deaths, 250 were reported to be occupants of fleeing vehicles, 46 were third-party victims in uninvolved vehicles, four were occupants of police vehicles and five were pedestrians."
Unless pursuit deaths rose a magnitude plus, I think you are misrepresenting some facts.