So called assault rifles only account for 1/2 of 1% of all gun related crimes. 58% is pistols, 39% is shotguns, 3% is rifles (mostly 22 rifles), then 0.5% semi auto AR-14 or AK-47 type rifles. Media and libs are focusing on the sensational multiple gun crime deaths. However, like people said, Chicago and other big cities have 40 or so single or double deaths from handguns every weekend and holidays.
Again, every multiple murderer has a red flag record. Arrested before, make death threats, had mental issues, or had youth record that was not used in background checks. The signs are there, but ignored by doctors, teachers, police. Why wasn't they put on the list to not be able to buy a gun. However, 85% of all gun crime is done with stolen guns. The rest are straw purchases (girlfriends or friends with no record), borrowed, with only a few bought "legally". Existing laws on the books are not followed. If they were at least the mass killings would be fewer.
America has lost the respect for life. Abortion, all negative news, disrespect for unborn babies, law enforcement, each other, have made many on the left angry, and give many young people no hope.