Trump is dangerous. He doesn’t believe in the Constitution.
He’s against freedom of religion, wanting to ban all Muslims from entering US.
He’s against freedom of the press. He wants the right to sue news media which he feels are unfair to him. Since he is so thin-skinned, he issues the threat often.
The president’s job is to execute policy, not to deny individual rights. Trump doesn’t accept that his electoral majority does not invalidate the Constitution and the Bill of Rights.