Well, if he survives, he will be brought to justice.
To expand on my initial "fuck off" (I was deeply angry and upset because I'd just seen that disturbing video, and then you apparently decided it would be appropriate to mock people for being upset about it): yes, for some people - like yourself, evidently - seeing these videos helps them to be able to empathize with the problem of gun violence on a more instinctive level. But there is a point where it can create a form of second-hand trauma that is entirely unnecessary. Furthermore, it is also grossly disrespectful to the victims themselves, and their families, for their murders to be aired as a form of shock value.