Nothing to laugh about

We were all shocked to learn about the mass shootings in Las Vegas. The question being why are these type of rifles allowed to be sold in the first place?
Being a Canadian I just can't believe how many guns are in your country. I'm sorry but I don't like guns in any way shape or form. A single shot should all be required for a hunter.
I'm not a hunter myself and the only thing I would shoot an animal with is with a camera.
I know it's in your Constitution to be able to arm yourselves. That was probably fine 100's of years ago but today we're supposed to be civil people.
If everyone put their guns away then nobody would need one. I know I'm going to get a lot of negative comments about this post but so be it.
Lets live in peace everyone.