Anyone that supports drug prohibition is either extremely ignorant, extremely stupid, or extremely evil, or some combination of thereof.
A brief look at any history book covering alcohol prohibition should be more than enough to convince any reasonable and honest person that drug legalization is a moral imperative.
Labeling those who disagree with you as "evil" and "stupid" is usually a poor way of convincing them to see things your way, and in general is a poor way of relating to your fellow human beings.
This is a sentiment that is usually agreed to in the abstract, but is often shunned in practice.
But don't worry, you're really, really right and you can be 100% sure of that, so it's okay if we jettison the trappings of civilized discourse.
A brief look at any history book covering alcohol prohibition should be more than enough to convince any reasonable and honest person that drug legalization is a moral imperative.