Iains, Trump has been especially criticized for his remark not just because it was foul language, but because it referred to Haiti and African nations in a policy discussion with legislators about immigration--in which he also voiced a preference for immigants from predominantly white Norway(!).

If you feel that even encouraging immigration from these countries to the US is a woefully inadequate remedy for the damage its neocolonialism has caused, and that those who profited from it should take commensurate steps to repair that damage, I agree, but I doubt that Trump or his supporters would.