Conservatives think freedom is protecting their way of life by eliminating anything that threatens their world view. That includes democracy.

Trump is demonstratively extolling fascist ideas such as rejection of the rule of law, rage against the elites, nationalism and race superiority, heroic strength through force, attacking the week, and disdain for women and gender minorities.

Perhaps the father only intended his son to use his AR-15 to kill animals for fun, which is totally acceptable behaviour for any budding young psycopath.