By Jessie Punn, Universidad de las Americas, Mexico Last weekend, I went on a trip to Puerto Escondido on the Oaxacan Coast. It was paradise – white sandy beaches, the most crystal-clear ocean, and the most spectacular sunset I had ever seen. One afternoon, after having spent hours floating in the sea and reading my book on the beach, I went for a wander with my friends where we bumped into a lady selling tamales. We bought some and sat down to eat them on the sand. About 10 minutes later, the lady came back and asked if we would mind if she sat with us for a minute in…