I feel there is a big difference between terrorism and making a statement via a violent action. Chaim, like most of what I've read about the Irgun and Lahey, tried not to hurt any civilians on purpose, while the terrorists of our day focus on both civilians and military targets.
The fact that Chaim, and his group, tried to draw attention to the mass immoral agenda at work during his day, and currently happening today via the Arabs, NAU, NWO etc. what he did was for pure shock value and to bring attention to an issue.
Perhaps if there were more Jews of similar integrity today, Israel would be catering to murderers and awarding our land to the Nazi Muslims for an internationally recognized but not honored piece of toilet paper...