How about backing background checks that would have prevented a person with a history of mental illness from owning a gun and then using it. Keep up with the all or nothing argument and you may find you don't like the answer.
-BEFORE JACKSONVILLE SHOOTING-; OMG, STOP POLITICIZING THAT WOMAN'S DEATH AND LABELLING IMMIGRANTS AS MURDERERS; -AFTER JACKSONVILLE SHOOTING-; OMG, LET'S POLITICIZE THE HELL OUT OF THIS AND LABEL ALL NRA MEMBERS AS MURDERERS