One month after Suffs, a celebration of first-wave feminism, closed on Broadway, playwright Bess Wohl shines a spotlight on the second wave in Liberation. Wohl offers vividly sketched characters, a well-honed mix of comedy and drama, and a complex yet heartening portrayal of sisterhood, but falters a bit incorporating her family history into the plotline and attempting to reconcile the 1970s women movement’s racial blind spots.