In speaking of love at this point, we are not referring to some sentimental or affectionate emotion. It would be nonsense to urge men to love their oppressors in an affectionate sense. Love in this connection means understanding, redemptive good will. When we speak of loving those who oppose us, we refer to neither eros nor philia; we speak of a love which is expressed in the Greek word agape. Agape means understanding, redeeming good will for all men. It is an overflowing love which is purely spontaneous, unmotivated, groundless, and creative. It is not set in motion by any quality or function of its object. It is the love of God operating in the human heart. – MLK