By 212 AD, Caracalla had murdered Geta, pronounced his "damnatio memoriae" and issued the "Constitutio Antoniniana": this gave full Roman citizenship to all free inhabitants of the Empire. and was couched as a generous invitation to celebrate the "victory of the Roman people" in foiling Geta's "conspiracy". In reality, Caracalla was faced by an endemic shortfall of cash and recruits. His "gift" was a far from popular move, as most of its recipients were "humiliores" of peasant status and occupation – approximately 90% of the total population. "Humiliores" they remained, but now liable to pay taxes, serve in the legions and adopt the name of their "liberator". Where other emperors had employed the "mos maiorum" of family obligation at the largely symbolic level of "genius" cult, Caracalla literally identified his personal survival with the state and "his" citizens. Caracalla inherited the devotion of his father's soldiery but his new citizens were not inclined to celebrate and his attempts to court popularity in Commodan style seem to have misfired. In Philostratus' estimation, his embrace of Empire foundered on his grudging, parochial mindset. He was assassinated in 217 AD, with the possible collusion of his praetorian prefect Macrinus.