Yesterday, my kids and I participated in one of the Connecticut versions of the national “March for Our Lives.”  We were at the state Capitol in Hartford, where speakers including U.S. senators Richard Blumenthal and Chris Murphy talked not only of school shootings but also of domestic and urban violence--and the role of guns.  Improved background checks were among the cited priorities, as a crowd of teachers, students, and others of all ages cheered and chanted.