Who, in the wild world of sports, speaks out for peace and social justice in the way that Muhammad Ali once did? After all, this is the age of Nike endorsements and globalization, not protest. Well, did you hear about the former Argentine soccer star who is speaking out against the Free Trade Area of the Americas? You probably did because it was in the news this past weekend.From the BBC: [Ex-soccer star Diego Maradona] "has become the unlikely...