The British press and government explicitly called them terrorists.
But the other side of it is just as laughable. Whenever the framers of the constitution wrote about what they were trying to do, they would endlessly hand-wring about how bad it would be for everyone to have a say in government. They thought only rich land-owning men had proved themselves worthy to hold power. You know, them and all their friends. The american "revolution" had more in common with a coup than any sort of real liberatory movement.