1. Rhetoric of an "enemy within". Trump has already made it clear that he intends to use the US military to "clean out" our country.
2. Supreme consolidation of power. Trump plans to re-enact Schedule F. Tens of thousands of federal workers will be fired, and their replacements will be required to vocalize their devotion to Trump. The bureau meritocracy system, which has been in place since the 1800s, will be removed completely. In its place, a system of political loyalty.
3. Supreme avoidance of the law. Trump is completely immune to any criminal prosecution while president, and he has made it clear he plans to use this newfound power "very aggressively".
4. Desecration of education. Within the first 100 days, the department of education will be dissolved. States will pivot to ahistorical pro-conservative education, if they provide any public education at all.