First up, we have the younger urban white folks who absolutely love their fixed gear bicycles. These are seen all over college towns, Silverlake in LA, Williamsburg in Brooklyn, Queen West in Toronto, and Victoria, British Columbia.
Fixed gear bicycles meet a lot of requirements for white person acceptance. They can be made from older (i.e. vintage) bicycles, thus allowing the rider to have a unique bike that is unlikely to be ridden by anyone else in town.
They are also easily customizable with expensive things Aerospoke rims, Phil Wood Hubs, and Nitto Parts. The combination of rare bicycles and expensive parts makes it easy for white people to judge other white people on the quality and originality of their bicycles. This is important in determining if someone is or isn’t cooler than you.