http://imgur.com/5tbXR2c
I don't understand what's wrong with this. This is quite literally the definition of racism in a sociological context: http://en.wikipedia.org/wiki/Racism#Sociological . You're going to need to disprove a lot of social science before you tackle this definition.
For example, if an organized group of American Asians began touting their superiority over other races and advocated and lobbied for more Asians in positions of power because they're superior, wouldn't you still consider their actions to be immoral?
People can use whichever definition they like, but they need to be open about it, and they need to realize by using another definition they're not also redefining or constraining the connotation -- that's begging the question.
So, black people cannot be sociologically-racist-therefore-immoral against white people, but they can be common-usage-racist-therefore-immoral against white people.
(I should also note that labeling something with a word that connotes a negative or positive affect isn't much of an argument for the applicability of that connotation to that something. It's a heuristic more than it is an argument.)