You mean the destruction of our culture? The displacement & replacement of whites? Is that what you mean? You mean the 'diversity' exhibited by race specific groups like the Black or Hispanic Caucuses? Or maybe you mean like invasion supporting groups like LaRaza or MEChA?
What's not to like? Why would we be against any of that? I think the idea of genocide and nation destruction is wonderful!
Some people realize that diversity is meant for whites only. And the campaign has worked extremely well. So well, in fact, that most liberal/leftist whites have no problem whatsoever with their race disappearing from this country (Bill Clinton has crowed about this). As author/journalist T.R. Reid said on a cspan interview about Europe becoming non-white; "that's fine".