Trump will be part of a system of checks and balances that just doesn't exist in the non free world. He will mellow with power, have to work with advisors and will also have to persuade others to get his ideas enacted. Everything he does will be subject to free criticism by a free press and will be modified by two parliamenatry houses.
Yesterday, in Iran a man was blinded as a punishment for (an admittedly heinous) crime. There are no elections in theocratic Iran which can reject this level of barbarism.
And, for the record, I am no admirer of Trump. A sense of proportion, though, needs to be kept.