Nazis, Stalinists, Maoists, Khmer Rouge, and all the leftists murdered, enslaved, imprisoned, indoctrinated, and dispossessed hundreds of millions in their godless, cults of personalities in the 20th Century. The African slave trade existed long before Europeans arrived and instead of the African leaders murdering political opposition and supporters, they sold them into slavery for a profit. 
Trump is about to spend $47 billion on drug treatment and abatement - nearly as much as the $54 billion on military upgrades. In these times of Russian, Chinese, and Iranian imperialist land grabs, we and our allies do not need to be wasting resources on wasted druggies.
Western civilization lifted the world from agricultural based economies that enslaved great numbers. Industrialization and market economies led to an age of invention bringing engines of production, light, flight, medical miracles, emancipation, and vast cornucopias of food.
Antifa and Soros funded groups would destroy our freedom