Anyone who thinks this wasnt racist, or that the marines arent filled with people with white supremacist ideals has either not been enlisted in the past 15 years or is a white supremacist themselves, trying to hide the fact.
Racists active in the military is not a big secret. The brass knows about it, there have been many investigations, and several sentences for members of white power groups active in the military.
Calling out these bad apples does not = hating the marines. NOT calling out these bad apples would equal to the ultimate disrespect to the corp as a whole.