What are the causes of the disparity between Obama and McCain supporters?

During the victory of Barack Obama's speech, each When Senator John McCain mentioned, the crowd cheered for the rival candidate. However, during McCain's speech, whenever Senator Barack Obama mentioned, the crowd jeered and booed. Is this a clear example of racism that we still live in the United States every day? Or is it just the rivalry between Republicans and Democrats that has always existed? If so, this means that the Democrats with Obama simply mature and become less angry and hate people?

Whereas McCain has never said anything positive about Obama How else do you expect people to react. Only a campaign orchestrated very fierce when asked and asked to present their policy – but could do nothing but vomit hate Obama. He was fully responsible for their attitudes. Well, he and Palin both. Democrats are the platoon peaceful, liberal and "accept" – at least more than the right. Democrats are generally more educated base, too.

Barack Obama Speech on Race (Tuesday, March 18, 2008)