James Brown , the Colorado shooting suspect , has no social media accounts . Police say it could suggest isolation , hostility toward society . 20 % of 18- to 24 - olds are on social networking sites , police says . `` I am not a 24-year-old gun-slinging killer from Aurora , I am a 22-year-old book-slinging mass eater from Littleton ... , '' he wrote . Others with the same age are being harassed on Facebook .
James Brown , the Colorado shooting suspect , has no social media accounts . Police say it could suggest isolation , hostility toward society . 20 % of 18- to 24 - olds are on social networking sites , police says . Others with the same age are being harassed on Facebook .