It's also worth nothing that this is true for the American late 90s wave of Ska. Ska developed from rhythms brought over by caribbean immigrants who created bands and made music along working class white people in Britain during the 70s. Ska is a follower of Jamaican rocksteady, and a musical and cultural forerunner to reggae, and other rhythms whose main deal and themes was to be explicitly anti-racist, coming from a place of working class solidarity.