> Trying to overthrow a government is not terrorism.

True; "trying to overthrow a government" is a goal, "terrorism" is a means deployed to achieve a goal. You can do the former without the latter or the latter without the former, but the Cuban Project had the goal of overthrowing a government and used terrorism as a major one of its means.

But if someone tries to overthrow the US government it is, right?

Unless it's the US government, right?

its freedom fighting

It isn't?