Of course, the main stumbling block to overcome is the breeding and creating of new bigots, although that seems to be less prevalent than in the days of government-sanctioned segregation and other racism. That being said, anybody that thought the election of Obama would end our racial society was out of their mind. To this day, people often use accusations of racism to deflect criticism of Obama or other black elected officials and that is shameful unless there is a clear sign of bigotry coming into play. The point is that the proverbial "kicking of the can" down the road of ending bigotry are people that do not WANT the appearance of bigotry to end and they will make it up as they go along as they see fit. However, there is indeed some work to be done with real bigotry but the overall shift away from bigotry as the people who perpetrated the pre-Civil Rights era are starting to fade away. Question Five

As far as how...

As noted above, people will create racism even when it doesn't obviously or actually exist but the other side of that coin is that bigoted people will try to portend that they are not bigoted. Either way, the consequence and aftermath of either proposition is very real in its consequences, per the Thomas Theorem proving itself to be true. This pattern and path pervades conflict theory, the feminist perspective and other similar theories whose believers will work themselves into a tizzy and thus cause real issues and consequences even if the details and beliefs are misguided or even entirely fabricated. As for Karl Marx, he was very much a believer in the people rising up the rich and powerful which is something else that lends itself to corollaries to the Thomas Theorem as well as conflict, feminist and other similar ideologies.