The 29 year old ex-marine, Gavin Eugene Long, who ambushed and killed three unsuspecting Baton Rouge police officers on Sunday morning, hated those who did not share his skin-tone and harbored a particular hatred for the police. As revealed in the hours after the shootings, a Youtube account operated by Long under the handle I Am Cosmo where the alleged killer posted dozens of clips, provides insight into what motivated the young man to kill three police officers and wound three more on his 29th birthday.