PERSPECTIVES | Most of the city’s major theaters open shows this week, and tonight’s unveiling of CLYBOURNE PARK, Bruce Norris’s smart 2010 drama written in response to the classic 1959 play A Raisin in the Sun, is near the top. Coming courtesy of Good Theater on Munjoy Hill, the show is a simple juxtaposition of two snapshots of American history. In 1959, a family in a white, middle-class neighborhood in Chicago agonizes over whether the arrival of their new black neighbors will affect property values. In 2009, the neighborhood is all black, and a white couple looking to move in to the same house symbolizes gentrification and all its ugly, thorny appendages. This compelling play opens tonight at 7 pm and runs through the 27th; $20-30, at the St. Lawrence Arts Center, 76 Congress St. 207.885.5883.