What is the theme of the concert? [originaltext] As many as a million Cubans

As many as a million Cubans are said to have attend the free concert in Havana’s revolution square that featured some of the Latin America’s most popular musicians. Many in the crowd came dress in white to symbolize peace. The 5-hour event included the bands from 7 countries, it was organized by the Miami base Colombian rock star Wallace.
    "This concert is just about peace, is just about possibility to get together, you know, through music, through art. And this particular case of Cuba have isolated from the rest of community for many years, just because of ideology. So we just want to come here and saying well, we are here, we are the same. So that is the reason why we are here to promote peace."