How are they conspiring to destroy it? Are you saying that coordinating attempts to change policy counts as destroying the previous policy, or are you drawing a line from identifying and locating the cameras to (possibly other) people actively vandalizing them?
If they were doing that, that would be a criminal conspiracy, not terrorism. Authoritarians often like to call ordinary criminals, political opponents, and dissenters terrorists to delegitimize them and justify harsher behavior against them. I assume that's what Garrett Langley was trying to do when he called them a "terroristic organization".
Luckily for DeFlock they're not doing anything "terroristic" or even criminal.
As another commenter said, it's a criminal conspiracy or something to that effect. If terrorism is supposed to be the use of violence against non-combatants to attain a political or ideological goal... then would de-Flock be anti-terrorism? Removing Flock cameras makes me feel less terrorized.