hearst is also the reason for Cannabis being illegal.

it was in competing with his vast hectares of forested land that he needed for his papermills which supplied his newspapers.

Hemp/cannabis is a fast growing, annually renewable and better source for paper manufacture.

so he bribed a couple of political cronies and blamed it all on black culture. Do a search on an old B&W propaganda film called Reefer Madness.

It's worth a watch.