In general, 20% of your professors will be of another race and 80% will be white. I doubt those numbers were any different 20 years ("decades") ago when minority graduation rates were even lower. So no, this isn't by any means an institutional thing such as "Whites need not apply". It's one incident, in one school. Your attempt to try and paint it as some sort of institutionally based attack on whites is laughable. If anything, statistics for hiring closely reflect society as a whole and not a bias in either direction. It's a nice try at the old "poor whitey" shtick.