sunday roundup week bring powerful reminder happen government fail citizen wednesday nation continue mark anniversary hurricane katrina unnecessarily tragic destruction uniquely american city nation wake uniquely american tragedy roanoke base news staffer reporter alison parker cameraman adam ward gun live television beginning news cycle know shock outrage call sensible gun law past prologue newtown shooting nearly americans kill gun common sense gun legislation propose time president obama continue lang USA  th USA ay president call katrina man disaster failure government look citizen say roanoke