Well, that depends on your definition of "we", doesn't it?
The problem with racism wasn't just the vulgar crimes against humanity (which were completely legalized by the system) but rather the prejudices of groups of people against another.
Everyone is capable of prejudice.
People seem to think that when someone calls you a racist, that term is in and of itself prejudicial or generalized to think of the Confederacy, the KKK, (Democrats for some even.) And yet, you can be prejudiced and still think you're being "good", like assuming all Asian people are good at math, Mexicans are hard workers, and that Russians are tough. These are still prejudicial generalizations. And it's not just limited to race or nationality either. Religion also plays a part. Christians are too puritan, Jews control all the networks/banks, and Muslims are terrorists. These types of thinking have no basis in law nor civil conversation that focuses on the crimes, errors, or characterizations of the individual.
The individual not being lumped into a "group" to be prejudiced toward is essential for conservatism to move forward. When conservatives make generalizations against liberals and/or Democrats and their motivations this, too, weakens the overall argument of why people should choose Republicans. You cannot change the way a person feels personally about how the system should change or not change (liberal/conservatism or reform/incumbent.)
If you'll forgive my own generalization, but I think a large people are very unhappy with the government. Everyone wants the system to change in some way so there can be found common ground but when we stick by our more extreme principles and choose to see each other as the enemy that, too, keeps the system from being changed.