Here is a quote that you may recognize. See how it fits with this.
People have been asking repeatedly for you drug "warriors" to furnish evidence that marijuana is dangerous or bad. You have been utterly unable to do so.
When our government banned marijuana, they came up with the lies that marijuana was dangerous and bad. It was and is propaganda that is simple for even the stupidest to understand and has been repeated over and over until the lie has become the truth.
The following quote says it all.
"All this was inspired by the principle - which is quite true in itself - that in the big lie there is always a certain force of credibility; because the broad masses of a nation are always more easily corrupted in the deeper strata of their emotional nature than consciously or voluntarily; and thus in the primitive simplicity of their minds they more readily fall victims to the big lie than the small lie, since they themselves often tell small lies in little matters but would be ashamed to resort to large-scale falsehoods. It would never come into their heads to fabricate colossal untruths, and they would not believe that others could have the impudence to distort the truth so infamously. Even though the facts which prove this to be so may be brought clearly to their minds, they will still doubt and waver and will continue to think that there may be some other explanation. For the grossly impudent lie always leaves traces behind it, even after it has been nailed down, a fact which is known to all expert liars in this world and to all who conspire together in the art of lying. These people know only too well how to use falsehood for the basest purposes."
I already did that. But your response, if you recall, was that marijuana doesn't kill you so therefore it's not dangerous. Remember?
Now, how does one argue a point with a person who is that ignorant?