Imagine that your ethnic group (about 10% of the population) have been an important part of the country for over 200 years, but one of yours has never been the leader.
Add that part of the reason for that is that your group was enslaved for 100 years, and then second class citizens for another 100 years.
For that group, tomorrow means that for the first time, they feel that they are capable of doing anything that anyone else can do.
I heard an older black man comment that now the young black guys no longer have the excuse of not being able to accomplish something because they are black. And he said that they can't even use the excuse "but I don't have a father" because the President didn't have one either.
I think that too many people look at this in terms of Democrat/Republican, and don't undestand the potential tomorrow has for healing some very old wounds.