State tv, dumbass president, social media misinformation, arrogance, and poor public education. Any other reason people are so dumb?!
You can have it without showing signs of it, if you have it you can spread it to other people, what's so hard to understand? Is there too much math involved or are people just that selfish?
American culture is largely individualistic.
It’s a combination of selfishness, stupidity, and not giving a fuck about the old and sick.