Because white culture teaches you to work hard and pay your debts while black culture teaches thuggery. They are trying to make all culture in the white countries just as shit holey as the black and brown countries. White skin is recessive so it won't be long until white people are completely extinct, and then it will be black vs brown. And with the white people goes white culture, which is western civilization.

Once everyone is dumb and weak the elites, who had themselves always been the weakest of their tribes, will finally be in control. This has been in the works for decades.