Yes, it can be a good thing in controlled circumstances but the tendency for abuse is the first thing humans run to. When we start using technology to think of all people as "suspects" in just that term, we give up freedom. This is a country which has set itself apart from others with the ideology of being innocent until proven guilty. If you're looking on video feeds with the idea that anybody on the camera is a guilty party then we've just come up with a new way to discriminate and gone right back to guilty until proven innocent. We all agree racial profiling is wrong and discrimination shouldn't have a place in this world...