I condemn what Brian Cass does to animals. In fact, I would say that I condone this. What surprises me is that this doesn't happen more often. Of course, this would often mean breaking the law, but those laws have been made by a selfish and arrogant human species without taking the interests of animals into consideration. Although fish and chip shops haven't been targeted before so far as I can remember, they would be considered legitimate targets.
Nothing does the amount of damage that fire can.
Make sure that all buildings or vehicles are free of creatures before lighting one single match. Arson should only be used when it can be guaranteed that the fire will not spread to the sheds the animals are in. No one has died yet but that time will come. I would be overjoyed when the first scientist is killed by a liberation activist. We consider that a pretty good return on our investment.