I think I have figured it out. What we are seeing at the RNC is the White Man's Last Stand.
And it's not just because Obama is not white. It's because the electorate is becoming more and more racially diverse.
Old White Men, and their kept White Women are seeing very clearly that in 10-15 years they will be the minority race in America. White supremacists have been fighting for decades to undermine and get rid of anyone who isn't white.
The Hitleresque photo of Palin is more than mere coincidence, Republicans are fighting for what they consider the "Master Race". This is their last election to try to get there. They want more Katrinas (1,800 dead victims - mostly minorities) and their Iraq war (2,500 deaths in a volunteer army filled with minorities). They want to do whatever they can to destroy anyone who is not pure, lily-white and Christian.
By sheer demographics, they are fighting a losing battle, and they absolutely know it, and that is why they are so unbelievably desperate. Even if they win this election, in 4 years there will be even more minorities voting in the US, until at some point the White Republican is a small pool. Their only hope is to corrupt the system, destroy immigration and rid the country of as much of the minority population as possible. To these guys, these "master race" types, this is serious business.
And as a white woman, I am heartened by the fact that soon, white people will be a distinct minority in this country. People like this must be stopped.
Mostly I feel sad for all the non-whites who support a party that is trying to destroy them. Seeing them at the RNC on television, I wonder what is wrong with them on such a fundamental level that they will commit personal, soul suicide by teaming up with this party.