Tickling injustice with the stick of angry

The problem with maitaining a blog entitled The Angry Dome is that the name suggests the blogger is angry all the time. Unfortunately this is simply not true, particularly at the moment. How can you possibly be angry when the sonic delights of Bloc Party are filling you ears? Oh wait, now The Others are on...politically motivated noise indie railing against the middle and upper classes? Brilliant, here we go...
While not entirely inspired by The Others, I found myself deep in conversation yesterday and putting the world to rights with someone I barely knew, somebody I met after seven or eight pints at the bus stop last week and decided to see again. Her being a struggling writer (think Daisy Steiner, Spaced fans) who is also a vegan and a Green party supporter, me being a pro-communism indie kid who hates pop culture, we had loads to rail about. Agreeing on everything, of course, and disagreeing with everything society can vomit up, the bile was soon flowing liberally. We soon found a moot point however, and both ended up sitting on the fence on one issue: terrorism and when it's right to put someone under house arrest with no solid evidence. At what point is it right to remove rights and liberties? Does skin colour, religion or nationality justify incarceration? Of course not! But why is it our government deems it to be in everyone's best interests to take away these people's liberty? Conversely, what about when it's too late? When someone detonates themself on a bus, killing twenty people, there's nothing that can be done save to condemn their actions and apologise to the familes of those who lost their lives.
Help me draw a line.