From 2 p.m. until the wee hours of the night, the St. Louis Underground Music (S.L.U.M.) Festival invaded Atomic Cowboy. Breakdancing battles, art, DJ battles -- and, of course, plenty of performances from movers and shakers in the local hip-hop/rap/DJ community -- marked the day. Jon Gitchoff went to the festivities and snagged these photos. Calvin Cox's review/recap coming in a separate post.