 Ramba uchinyora ndima iyi - Pashure peAurora, Colorado, 2012, neSandy Hook, Connecticut, zviitiko zvokupfura, nhamburiko itsva yakaitwa yokubvisa Mutemo Wokudzivirirwa Kwokutengeserana Kwepamutemo Kwezvombo kuti zvibvirire vanyajambwa vokurwisana nezvombo kupomera vagadziri vezvombo zvepfuti navatengesi pahwaro hwakafara zvikuru. 