...are sexually frustrated and therefore more likely to go on shooting sprees.
I'm not sure if it makes them "more likely," but there is a pretty high correlation of that in mass killings. I'm not sure if it's the most prevalent cause, but it seems to be a popular contributing factor and part of the whole "outsider" or "marginalized" persona of many of these shooters.
...and a lack of appropriate gun control.
...and has access to guns
This is ancillary to the problem. As stated in my original comment above, mass murders are committed with a wide variety of tools, some of them not necessarily tangible. When mentally ill people have a desire to kill, they will find a way to do so, whether with a cargo truck, a knife, homemade bombs, a gun, or a shitty economic system that they force on a society.
We may disagree about the availability of certain tools, but I try to leave failed prohibition laws and policies at the door. Unless, of course, you are the target of the prohibition. :)
I never said ban guns, i said they - the mentally ill - have too much access to them.
Don't ban me. Who else would you make fun of?
So you want to ban mentally ill people? You’re a monster!
Ugh