Contrary to popular opinion, such predation is not mankind's main problem. It is only the ruse that fuels the political campaign for law'n'order, politicians not yours. And if feral predation fails to produce enough victims to sustain the system at a level sufficient to suit the ambitions of lawyers and law enforcement bureaucrats, then there is always legislation to create criminals without victims. The main problem facing humanity is the mob, organized crime or institutionalized coercion, whichever term fits. Notice how such rackets quickly pass from the scene when they have to face up to competition in a free and legally-uninhibited marketplace.
Mobs become an insurmountable problem only when they obtain legal privilege.
The history of prohibition and abolition is instructive on this point. True enough, there are at least two factions contending for leadership of the national racket, the ins and the outs, known as Democrats and Republicans for the better part of 150 years. Two-party competition is widely extolled as a virtue of American government. The virtue touted is apparently the negative one that a single party in control of the government would have worse consequences for the subjects. Regardless, these popular factions are now and always have been united in a common purpose, namely the preservation of the monopoly racket popularly known as the United States Government.