Humans aren't naturally that stupid and need help to achieve the level of stupidity of the average Hillary supporter. It's well known that Marijuana use causes stupidity in its users, and the states that went heavily for Hillary in this election have legalized Marijuana, so there could be a connection between Marijuana induced stupidity and Liberalism.
I wonder, could the motive behind Democrat politicians' continuing drive to legalize Marijuana throughout the U.S. be an attempt by them to create more stupid Democrat voters to ensure their election and re-election?
Somehow, America was not plagued with this kind of thing in the era when nobody cared if you grew marijuana.