You could start by reading the thread.
I have. You have implied you are against gun control but you explicitly stated your opinion.
When you do we can have a conversation.
My position, if it's not clear, is that you have a problem in the US. I don't really feel I have to back that up, the shooting stats speak for themselves.
Offering up "thoughts and prayers" isn't really cutting it.
"Good guy with a gun" is a stupid argument - from what I've read the shooter in Ohio was shot and killed within a minute of opening fire which is commendably efficient, but in that time he managed to kill 10 people.
No-one should have a semi-automatic assault rifle in their house. Even if you buy the self-defence argument you don't need a gun that powerful to do that.
So that type of gun should absolutely be controlled, and that sort of control has worked in other countries. Debatable whether it would work in the US, the genie is arguably out of the bottle already, but doing nothing hasn't worked so maybe you should try doing something about this problem.