. >> reporter: john ortley has managed this store and he thinks the use of this may catch group everybody is worried and cameras ar good way to go. >> that is pretty neat, that's cool that technology is having a real good application. >> video vigilante, a new form of social media to help the police. >> reporter: instead of using one of these for protection, people are starting to use these, a lot safer and in this case it works. on ken island, i'm ken harrison for abc news. >>> there were pictures posted from a bank robbery to the page from a camera. >> a man was killed in the middle of the street, it was in west baltimore. the man refused to put knives down and the man was shot in the abdomen. detectives recovered two knives from the scene. >>> now from the very latest from last night at 11:00. an edgewood man is dead after a bizarre invasion and police are blaming the homeowner that tried to restrain him. jeff. >> reporter: witnesses say 53- year-old joseph breaken ridge made a habit out of walking into his neighbor's home without warning but this time it cos him his life. he was obses