I was watching an episode of Star Trek Enterprise about a non-rebel group of Suliban being held in a detention camp for their protection. The camp was compared to our putting ethnic Japanese into tar paper caps for their protection. Manzanar was out on the cold plains of Montana. They, like the ethnic Germans in WWI camps, were in danger because our government had worked to vilify them. Hundreds of ethnic Germans were killed by Americans who had been incited to go out and kill other human beings. The camps may have saved a lot of Japanese-Americans.
Hitler vilified the Jews so much the average German was convinced the Jews were sub-human and an enemy to Germany. Slavic people were sub-humans also. Almost every war has had their people convinced the enemy is horrible and deserves to be killed.
Today I see a similar scenario in many countries around the world. The East Europeans, in particular, have made Syrian refugees the enemy. Myanmar’s ethnic cleansing of the Rohingya is another case in point. Usually the source is the idea of one person or group of people who want to take over control of their people. In the distant past the propaganda was spread verbally, then by newspapers, and later by radio. Television came along with a more even reporting even if the visual aspect would have helped or exposed the lies. Today the vilification is being done on the social media platforms of FaceBook and Twitter, among others.
The President, NRA, Russians, and others have gotten their way by playing one group against another and by smearing reputations to gain and retain control of particular groups. Except for Trump, all these other instigators work to remain anonymous while dividing our people. It’s obvious for Trump, but to what purpose do others do it?