It wouldn't make any difference. Anonymous isn't a set group of hackers, it's quite literally anyone and everyone that wants to get involved at any moment for any cause whether for fun, such as sabotaging Time's most influential people list, to objecting en-mass to outlandish proposals such as these censorship laws.
Labelling Anonymous as terrorists is essentially labelling the general public as terrorists.
Labelling Anonymous as terrorists is essentially labelling the general public as terrorists.