All politicians use it, no matter what party they are in.
Individuals owe a duty to society. If Tony Blair is willing to sign up for that, good. For good measure, Paddy Ashdown's Liberal Democrats claim to have always been the party of the Community, but never more so than right now. It has been a long time since there has been any new thinking in mainstream politics. Any claim to have found the long-hunted Big Idea should be taken with a pinch of salt.