In 2015, a black bar association in St. Louis named the Mound City Bar Association hosted a “solutions summit.”It was in the wake of the shooting death of Michael Brown, an unarmed black teenager, by a police officer in Ferguson, Mo. The shooting brought on days of protests and marches from angry residents.The bar meeting reduced tension by bringing together legal professionals, law enforcement officials and local activists to talk face-to-face.That’s the kind of work bar associations can and should be …