motivation, what was his connection to the school. i say his. i m assuming it s a male we re talking about. they ll go back first and speak to friends, relatives, family members, people who knew him in whatever school he s attended. they ll go back and look very closely at any sort of social media presence that the shooter maintained, whether he posted any statements about his intents, about his purpose and his motivation, and even if not about those things specifically, they ll try to come up with some sort of a character sketch, if you will, as to what was in this person s mind in the days and weeks leading up to this. they ll look at his browsing history, his contacts on email, text, social media, on his telephone if in fact he had one, which he probably does. so it is a massive effort to try to paint as rich a picture as you possibly can of this likely deeply disturbed person who committed a horrific act. it s important for us as a society to understand more and more abou