http://news.yahoo.com/s/ap/20100627/ap_on_re_ca/cn_world_summit_protests Security was being provided by an estimated 19,000 law enforcement officers drawn from across Canada, and security costs were estimated at more than US$900 million. Police said they have arrested more than 560 demonstrators So basically it cost them over $47k dollars for each law enforcement officer to do security that day. I thought law enforcement was supposed to be underpaid. Or it cost approximately $1.6 million dollars for each person they arrested. Might have been cheaper to just let them rampage the city, and reimburse owners later for all the damage.