Does history have a border? That is the question at the heart of Cinco de Mayo, May 5th, a holiday that symbolizes Mexico's fight for autonomy, even as it's come to be associated with sales and cervezas and margaritas in the U.S. Cinco de Mayo is part of a much deeper story of two nations — Mexico and the U.S. — trying to define themselves at a time when old empires were crumbling and borders were in flux. A story that culminated in a revolution in Mexico that was at the forefront of a worldwide movement against predatory capitalism and foreign domination. So in this episode, we're going b...