years ago we lost a member of our nbc news family covering the war in iraq. tonight, my conversation with david bloom s widow about the lives his story may have saved announcer: this is nbc nightly news with lester holt good evening and welcome. the tears of grief that consume nashville, tennessee, just ten days ago over the murders of young children and school staffers are replaced tonight by cries of anger and accusations after an extraordinary move by tennessee house republicans to seek the expulsion of three democratic members for their roles in a gun safety protest on the house floor last week. all day angry supporters and gun safety advocates crowding the statehouse where the gop majority was putting the resolutions up to a vote one by one, declaring the three participated in disorderly behavior when they led supporters in chants demanding stricter gun safety measures. expulsion a rarely exercised right of the tennessee house that critics on the left tonight are c