i don't have what i would consider a complete answer for this, but a partial answer is that anarchists disagree with each other more than most/any other tendency, and are probably (perhaps?) more misunderstood by outsiders than any other tendency too.
all this disagreement and misunderstanding requires a whole lot of explaining, clarifying, and foot stomping.
edit: and as should be obvious, doing stuff in the streets is not incongruous with publishing, and vice versa.