appropriately. in san francisco, a woman is follow andp stops a black guy in the apartment after he showed proof that he lived there in the luxury complex, and then she called police. listen to that encounter. >> all i am asking is what unit. >> i don't have to tell you that information. >> if you want to come into my building -- >> it is is not your building. >> and she said that she was following orders not to allow access to anyone that you don't know. >> and a 9-year-old boy was accuse of sexually assaulting a boy that was actually his backpack that brushed up against her behind, but these string of incidents are starting to the raise questions of implicit and explicit racism, and whether ra racism is on the rise or if the ubiquity of camera phones are making it seem that way.