There is no reason for a citizen to have weapons designed to kill in mass.
What the heck are those, and how do you distinguish these "weapons designed to kill in mass" from other weapons? There are a great many reason for a citizen to own semi-auto rifles.
Me saying this does not mean I think people should only be able to have muzzle loaded guns. I have no problem with sane law abiding citizens having hand guns, rifles, and or shot guns for protection or hunting.
Semi automatic rifles? Or bolt action only? How about youth model 22's? What issue do you have with "semi-auto" because the technology is not "designed to kill people in mass."
I do have a problem with people being able to get online and order thousands of rounds of amo and guns designed to kill in masses in a matter of seconds.
Thousands of rounds of ammo is not much really, especially if you go shooting once or twice a month and go through at least 300 rounds. When it comes to ordering guns online you must have one delivered to an FFL, and go through the regular NICS check and paperwork.
It only takes a few dozen, maybe a few hundred to commit a mass shooting. Amounts that would not raise an eyebrow, but people who go to the range buy much more than that regularly online because its cheaper to buy in bulk. You couldn't in any way limit mass murderers, however any attempt to would restrict responsible citizens who practice safe shooting.
I do have a problem with guns being sold with no background checks. I have a huge problem with people who have a history of violence being able to just go buy a gun and weapon and in a matter of hours kill people.
So you're opposed to the cash and carry of rifles and shotguns? All guns have background checks, only handguns have waiting periods.
Recently, a man in Florida killed a teenager because his music was too loud and he refused to turn it down. If you can't see there is something wrong, then I don't know what to tell you. If we see there is a problem but are not willing to at least try to find a viable solution then you are a big part of the problem.
See here is where we disagree. Of course we who are opposed to gun control abhor violence and see something wrong with an insane person breaking the law and harming someone, especially with a firearm.
As for finding a viable solution, no "common sense gun control" can prevent insane people from doing insane things, criminals will not obey the laws against murder so they will not obey any alleged "viable solution" and all such things do are limit the law abiding gun owner. Much has been passed that still does not stop these mass shootings. In fact evidence indicates that these gun free zones only disarm the law abiding who could make a difference in such target rich environments.
Magazine limits, waiting periods, background checks, all largely ineffective. Outright bans and confiscations are even worse than gun violence. What works is more good people with guns.