[dragonwriter]

> How do you suggest that you legalize all drugs and then keep people on those drugs from harming others?

Illegalizing drugs doesn't keep people on those drugs from harming others; in general, government policy can't absolutely prevent any class of unconsented harms, what it can provide accountability and compensatory mechanism and do things to mitigate (or increase!) the quantity of such harms. And I think the evidence is pretty clear that prohibition, as it has been attempted with alcohol and many other drugs, does quite a bit to increase harms inflicted on others related to the use of and market for the prohibited drugs. A better policy is needed, but its not reasonable to expect that that policy will "keep people on those drugs from harming others".