It's obvious to anyone who looks that Donald Trump is a liar, is incompetent, and doesn't care about the law (because he considers himself above it). But he is something else also. He is a monster -- a mean-spirited and cruel monster who cares nothing about human lives.
Consider this from the New York Times (who got it from anonymous White House sources):
Privately, the president had often talked about fortifying a border wall with a water-filled trench, stocked with snakes or alligators, prompting aides to seek a cost estimate. He wanted the wall electrified, with spikes on top that could pierce human flesh. After publicly suggesting that soldiers shoot migrants if they threw rocks, the president backed off when his staff told him that was illegal. But later in a meeting, aides recalled, he suggested that they shoot migrants in the legs to slow them down. That’s not allowed either, they told him.