Started by grassroots riders Dave Stiefvater, Van DeWitt and Halston Rhodes, this the DirtStar army is is raising the battle flag and laying siege on mediocrity.  This June, the DSA released their first DVD, Let It Happen.  In the film, local riders and even a few out-of-towners, shred the gnar on dirt and street.  To promote their latest creation, the DSA held an all-ages screening at the Salt Lake City Public Library. Photos: Barrett Doran