In a series of comments written on YouTube earlier this month, Jeremiah Perez, under the name 'Vets Hunting Cops,' threatened violence against a variety of politicians, celebrities and police officers, the Smoking Gun reported Wednesday. 'Join us and kill any cop or any retired cop !!!!!!!' he wrote.(VIDEO-AT-LINK)An unstable Colorado military veteran was arrested by the FBI after he allegedly posted retaliatory threats online against police officers in return for no charges being filed against the cops who killed Michael Brown and Eric Garner. In a series of comments written on YouTube earlier this month, Jeremiah Perez, under the name...