Stewart Rhodes, the founder of the Oath Keepers, responded today to last night’s sniper ambush of police officers near a Black Lives Matter protest in Dallas by calling for “patriotic Americans” to “go armed at all times” and “reestablish the militia system.”

Rhodes wrote on the Oath Keepers website that the shooting was the product of “the Marxist agenda to divide and conquer along racial lines and inspire blind hatred against all police, and against this nation in general,” warning that it would be used to “further militarize” the police and “trample on the right of the people to keep and bear arms.”

Tying the shooting in Dallas to the attack on an Orlando gay nightclub by an ISIS-inspired terrorist, Rhodes wrote that what “is now needed, more than ever, is the reestablishment of the militia of the people, trained, equipped and organized in each town, to defend against what is now clearly a ‘Tet Offensive’ American style.”