Why did colonist bealive thag george iii was trying to have them killed

On October 27, 1775 King George 3 spoke to parliament about American rebellion,
He began his speech by reading a “Proclamation of Rebellion” and urged Parliament to move quickly to end the revolt and bring order to the colonies. ... With these words, the king gave Parliament his consent to dispatch troops to use against his own subjects, a notion that his colonists believed impossible.

One was to hold a leash on a despot and future despots to come, another was set to ensure no despots ever came to power.

The correct answer is "true".