>>212768431No, terrorism is when you attempt to affect political change within a society through violent attacks on civilians.
The Imperium was not engaging in terrorism because it was not trying to affect political change, but rather, to reinforce it's own power. I.E., Joseph Stalin was not a terrorist for murdering millions of Russians. He was a tyrant, but not a terrorist.
Similarly Palpatine was not a terrorist, he was a tyrant, these are discrete but similarly evil things.