it was the spring board that let him act on this fantasy of getting back at his enemies and this has been festering for 15 years maybe more. as he said it was the charleston church shooting which put him over the edge and what it did of let him think i get to vindicate the lives of those murdered black people. dillon roof has nothing on me. let me show you how to really get people to sit up and pay attention by doing it on live tv. >> we spoke to several of his co-workers of different ethnicities. not one said there was any sort of race, they experienced or witnessed any sort of racist, you know, behavior around him or towards him. but yet he's seeing this behavior. and we have seen people like that. how do you know when it's just something that's just not serious and something really serious. >> his persecution complex was persistent and consistent and insistent. it never went away over these 15