I believe this is not a coincidence.
Arbitrary search and seizure, checkpoints, mass detention are common features of military counterinsurgency. They are also features of the drug war.
I'm not saying the drug war is consciously aimed at youth and minority citizens the way similar tactics were aimed at Communist guerrillas in the Malaya emergency, or Sunni insurgents in Iraq. But I am saying that the effect is about the same.
That's why it's probably a mistake to lean on rational utilitarian arguments against the drug war. The unspoken selling point is its unacknowledged side effects. Sure there are costs, but no more Watts, no more Black Panthers. The calculus of harm reduction is weak against dots that are never connected out loud.