days. then, police say, erased in line with privacy guidelines. >> do you think this is overly intrusive into new yorkers' lives? >> no,i don't. this is all public data. we're not going into someone's private domain. this is all on the street. >> the opinion is the nypd collects too much private information. >> do you think new yorkers need to be more aware of how much is being done in the name of security? >> i think so. the history of surveillance never stops with the principal object of the surveillance. they say, i don't mind, because they're just going after islamists because they don't identify with them. >> but why talk about new york's