Palm Sunday is found:
whenever we are serving a noble and unpopular cause with selfless devotion, holding to the ideals of truth and justice;
whenever we are seeking to uplift the fallen, to comfort the brokenhearted, to strengthen and encourage the weak and hopeless;
whenever we are working bravely and persistently in the face of abuse and criticism to establish more equitable relations in the world;
whenever we are sacrificing our lives in behalf of what we believe to be the service of love for all humanity.
That is Palm Sunday!
Source: David O. Rankin, Dancing in the Empty Space (Skinner House Books, 2001).