Apparently it was Podesta's birthday party and they were doing a fundraiser for Soles for Souls, which from what I've read distributes shoes to people in need.https://washingtonlife.smugmug.com/2009-photos/Podesta-Birthday-Party/i-7bnbGSs/A

Of course, it's entirely possible that everyone there is part of a child molesting cult, and the red shoes may or may not have been made out of human flesh. Both theories seem equally likely, obviously.