FWIW the specific activists who entered the base were charged with "conspiracy to commit criminal damage" and "conspiracy to enter a prohibited place knowingly for a purpose prejudicial to the safety or interests of the UK", not terrorism. [0]
If the government wants to shut this group down (which I think is a reasonable response to an attack on our military) then I'm not sure what other options were available to them. And like I said, what they did seems to meet the legal definition of terrorism (regardless of whether that definition is a good one.)
Of all the arguments we could be having about Palestine, I'm really not going to shed any tears for Palestine Action.
But I'm not here to get lost in the weeds, I just objected to the misleading half-truths that were being presented above. Most people reading this don't follow UK news closely and might come away with the impression that the government is banning pro-Palestine protest entirely, or is making it illegal to merely "hold placards". That's an outrageous distortion, and it hardly helps the pro-Palestine cause. I couldn't let it slide.
Here in Sweden what organizations are engaged in terrorism is up the courts and the government has no right to intervene at all to proscribe a group, with EU and other political terrorism designations being irrelevant.
Furthermore, I think that there is a duty, if one suspects that a capability is or may be used to aid genocide, to destroy that capability. Hopefully Palestine Action are incorrect, and targeting assets that have not been used to aid genocide or otherwise make it easier, but if they are right and the UK have actually aided genocide, then they have done too little violence.
[0] https://www.bbc.co.uk/news/articles/c3dp5158720o