Dave Alvin formed Americana band The Blasters in Downey with his brother Phil, then went solo in the 1980s, but returned to show KCRW around. In the 1990s, Downey rapidly shifted its demographics to become mostly a Latino area. It was then labeled “Mexican Beverly Hills,” but longtime residents say that’s unfair. A nonprofit gallery in downtown Downey has been instrumental in developing an art scene in the city. Now it faces possible closure.