I'd also like to make a second point on Racism - and how it is automatically a "bad" thing.
Well, Racism is simply a human mental process of grouping - which has been essential for survival. If our experience gives us bad impressions of white people, black people, or asian people, it would highly illogical to ignore those experiences and repeat those bad experiences.
It is no different than learning from experiences with oddly colored or poisonous plants, inhospitable environments, or positively, methods for harvesting, hunting etc. We want to generalize because that allows us to pattern and trend to develop our survival - and all living things generally do this.
So, is racism... good or bad? Well, it is clearly NATURAL. Race is afterall, just one aspect that helps us to perceive the world better in order to survive.
IN Modern day society, many things that are... natural... may or may not be relevant. It is natural to out-compete other males for survival (by murdering each other if necessary), it is natural to mate with as many females as possible, it is natural for many things - but social development has, for better or worse, civilized us to put some intellectual ideals before basal level instincts.
In modern day society, racism can be strictly and scientifically beneficial - at least statistically. It tells us to avoid Bed-Stuy, areas in Oakland etc. I will freely admit to racism because I do not want to increase my chance of being shot, mugged, or caught in a gang related crossfire.
However, racism always tends to hurt the races that are stereotyped against, because the ones that are most visible damage the reputation to the ones who are not. Obama or Deval Patrick are high profile, highly intelligent Black men, but those two alone can't undo the much higher number of Blacks who are visible in the media for less noble endeavors. What happens to the 18 year old Black man who goes to Harvard on scholarship? He becomes the victim of racism.
It it thus important for us to approach individuals as individuals, not with preconceptions as members of a group. It is, in my opinion, an anti-racist approach that is difficult to accomplish for most people.
Sadly, for most people, the racist approach is much easier (on their limited intelligence) as well as on their social lives, and so this is the approach they use.