We live in a mostly African American neighborhood, Rabbi Sol, but our town is not mostly African American. There definitely were a lot of Black people at the rally, but there was at least an equal number of White people there, including a very sizable number of middle aged and older White people.

They weren't just there for curiosity, either. People waited for hours to get in, standing the whole time, some of them in the rain (the rain stopped just before we got there at about 9:30), and then they had to go through a stringent security proceedure, and then wait in a crowded coliseum for two hours until Obama arrived. It took more than two hours just to get everyone through security and seated once the doors were opened. We were there from about 9:30 AM to about 3:00 PM. And even more importantly, the tickets were only available at the Obama headquarters for three or four hours before they ran out. The people there were not curiosity seekers. Plus, the audience was very enthusiastically (and loudly) in support of Obama.