The Amalek Consciousness

On the Shabat before Purim, we fulfil the mitzvah of Zakhor, remembering Amalek, by reading the passage about this archetypal enemy in Deuteronomy 25:17-19. From a surface reading of this passage, however, it is hard to understand why this mitzvah should be performed only once per year. Indeed, the Rambam, in his Sefer Ha-Mitzvot, understands the mitzvah of Zakhor to be active every day. What could it mean to fulfil this mitzvah every day? And why are we remembering the evil that one long-dead nation committed against us? Is there another way we can think about the mitzvah of Zakhor? (5781)