Are we not all murderous, lustful kings? Our animosity is murder without opportunity or means. Our appetites are guarded lusts, motivating almost all our thoughts.
War and greed are still crouching at the door. This is the motivating principle of democracy itself, since it teaches us no man can be trusted too little or for too long.
Apparently fast walkers can get impatient with slow walkers, bumping into them or cutting in front of them, while muttering under their breath, thinking hostile thoughts and making faces.
It may simply be sloth and a sense of entitlement that extends adolescence far beyond its historic boundaries. But in the end growing up is a choice, not merely a consequence.