By their own words they were going to commit terrorism. That, logically, makes them terrorists. They were found, on film, to be making and experimenting with illegal explosives, and they were found to own even more materials. If you have trustworthy evidence that this is all fabrication—evidence that doesn’t exist in your mind—then I’d be more than happy to see it.
And if you’re saying all of this because you agree with them and their actions, at least have the courage to state you support terrorism directly.
Surely you aren't taking a government at its word on a politically charged case? Need we trudge out the Chicago 7 again?