More on Dr King: A less common quote (at least to me)

[A]s I have moved to break the betrayal of my own silences and to speak from the burnings of my own heart ... many persons have questioned me about the wisdom of my path. At the heart of their concerns this query has often loomed large and loud: Why are you speaking about war, Dr. King? Why are you joining the voices of dissent? Peace and civil rights don't mix, they say. Aren't you hurting the cause of your people, they ask? And when I hear them, though I often understand the source of their concern, I am nevertheless greatly saddened, for such questions mean that the inquirers have not really known me, my commitment or my calling. Indeed, their questions suggest that they do not know the world in which they live.

- Rev. Dr. Martin Luther King Jr., in his speech, "Beyond Vietnam: A Time to Break Silence." (Source: American Rhetoric)