Apologists for Thatchers brown shirts, and for the British government's actions in the North of Ireland, wouldn't understand the use of such tactics. But then they never have understood. They didn't understand it in the 1770's, the 1970's, or any other time. When one is facing an adversary that has them outgunned, and uses the cover of the establishment to justify their evil agenda, then those that are fighting for a legitimate cause fight back using whatever tactic will allow them an edge. I do not expect apologists to get this. But there it is.