Rsada

"Sí se puede", is a phrase that has become very popular in Mexico over the last 10 years in sports events where Mexican teams are involved (as I remember it began in the France World Cup in 1998). It later became a rallying chant for almost all sports (and even politics): soccer, olympics, etc. I think it stems from the historic frustration Mexican fans have experienced over the years, and the strong belief that this time around results will finally be different, and I believe that is why the translator used it. I would translate "Sí se puede" as "It can be done". Therefore, I must agree with Sandra T. that "Sí podemos" is a better translation for "Yes we can".