He pretended to be a jihadist online and befriended alot of muslims with twisted ideas and 2 of them he managed to inspire to go for an actual attack in an arts exhibition that he deemed disrespectful to Allah in Garland in May
They were unable to commit an attack as they were killed by the cops when they saw them coming
Metropolis aka BlueMilk aka Joshua Goldberg was however not content with just 2 deaths on his hands (
and most likely wanted some innocent people to go too) so he kept up his jihadist online speeches telling people to commit acts of violence towards white Americans on the anniversary of 9/11 which also ironically became the day he was arrested
Here's an interview with him from jail:
http://imgur.com/vGXfoyQ