Pursuing the relationship between theory and practice is often daunting for activists. Communicating something to an audience bound by a spectrum of concerns that are narrowly defined is the easy part. If your audience is against war, it is easy enough to say, "I am against war." Additionally, it is never too hard to accuse someone else of not being sufficiently against war, in order to highlight one's own level of commitment. This is almost always a waste of practical energy; but again, easy enough to do as long as we know the bounds of debate in advance.
Once we exit the predictable confines of our own group or club, the bounds of debate can only be discovered by testing them -- by talking to people and hearing their concerns. Insofar as we wish to be persuasive, the concerns of others must form the starting point, for the simple fact that nobody is bound by ours. This includes concepts and vocabulary used during the conversation; again, to the degree that we want to communicate anything at all to others, we first yield to their terms. And this is because no amount of self-satisfaction on our part ever obliges them to listen -- or to care.