Although prostitution and drug dealing had occurred in the area as far back as the early 1920s, they became epidemic in the 1960s. The area's movie palaces, built between 1911 and 1931, became grindhouses. The last of them closed in the 1990s; the Orpheum Theatre recently underwent a complete restoration at a cost of several million dollars, and is now used for major movie premieres (such as "Collateral" in 2005), celebrity events (Michael Jackson's birthday party), comedy shows (Bill Burr), fashion shows, concerts (Opeth), and plays. Most of the older buildings have stores that cater to the Latino immigrant working class.