Shall not

Exodus 22:28
You must not blaspheme God or curse the ruler of your people.

1 Kings 21:10, 11
But seat two scoundrels opposite him and have them testify, 'You have cursed both God and the king!' Then take him out and stone him to death." . . .

cursed

2 Samuel 16:5, 7, 13
As King David approached Bahurim, a man from the family of the house of Saul was just coming out. His name was Shimei son of Gera, and as he approached, he kept yelling out curses. . . .

1 Samuel 24:6
So he said to his men, "The LORD forbid that I should do such a thing to my master, the LORD's anointed. I will never lift my hand against him, since he is the LORD's anointed."

1 Samuel 26:9
But David said to Abishai, "Do not destroy him, for who can lift a hand against the LORD's anointed and be guiltless?"