But... that's a bipartisan thing, not a Democratic thing: no Republican Administration (which could do this alone, as an executive action) or Republican majority Congress has proposed ending registration since Carter reopened it as an executive action to prepare for potential war in the wake of the Soviet invasion of Afghanistan.
In fact, bipartisan legislation creating a committee to consider expanding the uses of the draft was passed in 2016.
> war on drugs
Again, not a Democratic policy.
> DARE program
Not a Democratic policy (and it works quite well to improve it's targets opinions of law enforcement; it doesn't do anything about drug abuse.)
> three strikes (voted in CA, a heavy democratic state)
About half of states and the federal government have three strikes laws, and they are not more supported by Democrats than Republicans.