Celebrate our nation's diversity and freedom of expression this long weekend by checking out some of these independent-thinking artists, from the trash masterpieces of Conrad Carlson's Boxcutters in Brown Town to the scientific beauty of Heather Dewey-Hagborg and Paul Hazelton's DNA and Dust. Like America, art also embraces the flavors of global culture, so mark MER KA BA at The Jewish Museum on your calendar and don't miss the Cambodian nostalgia of Chath pier Sath's I'm Here.