hopefully you'll make it through smoothly. >> a san francisco police officer is under investigation this morning following an undercover report by the nbc bay area investigative unit. >> at issue, did the officer violate department policy when he made threats against people in the streets, not knowing our cameras were rolling. senior investigative reporter vicky nguyen joins us with details on the reactions to those comments. >> we were surprised when our surveillance of an illegal street market collided with surveillance by the san francisco police department. but it's what one officer said that prompted an entirely different investigation. this is officer joshua fry approaching a group of asian and hispanic men on market street. >> you know what we've been doing? taking your pictures. we're taking a lot of pictures. we've got some fun [ bleep ] coming for your guys. oh, no, we took your picture. oh, yeah. >> i don't do nothing. why do you take my picture. >> wait until we get ins