Okay, I can tell that this is going to be too easy. So, here we go.
1) Gun laws aren't an oxymoron by any definition.
This is your opinion, but as you will see, you haven't supported it very well.
2) Being a criminal does not equate to getting a gun.
Obvious. What's the point?
3) Gun laws make it harder for criminal to get guns,. And it keeps getting harder.
Unfortunately, this just isn't true. Criminals have easy access to guns, even in places with tougher gun laws. As the GP rightly pointed out, criminals do not follow the law. That alone does not mean that guns laws have no effect on the ease by which criminals can obtain guns, so your theory could still be correct. However, the reality has shown that gun laws are far more effective at making it harder for honest citizens to obtain firearms for their own self protection than they are at preventing criminals from having guns.
4) Crime drops when gun laws are enacted.
Yeah... this isn't true either, one of the most-cited counterexamples being the steep rise in violent crimes in Washington D.C. after the gun ban of 1976. At best, as the NY Times pointed out, there are a lot of factors to take into consideration. Of course, this isn't the only counterexample, by far, but I only need one to prove your assertion incorrect, so I'll leave it at that.
5) If having a gun was illegal, you would have an opportunity to know someone was going to kill people when you found them with a gun.
Umm, no... You realize that the vast majority of armed robberies do not end in any shots even being fired, right? The threat is usually enough. Obviously the posession of a gun by a criminal does not imply his intention to kill. These points are so easy to counter, it makes me wonder at how serious you are.
6) Same thing if someone was getting Ammo.
Similarly false, and even more absurd.
7) teacher firing a someone one in a panic situation means more people would have been likely to die.
Most likely, you feel like you would panic in that situation and so you imagine in your mind that others would act as you think you would. Your imagination does not match reality. Common citizens are capable of training with firearms in order to react appropriately, and it really doesn't take much training. This is obviously true because many common citizens do train and choose to carry concealed weapons. Nobody is suggesting that it is a good idea for untrained people to use guns. The scenario you envision where clueless people flail their guns around in "panic situations" exists in some fictional hollywood movies and your own imagination.
In reality, it would have been a very good idea for the teachers to be able to opt to retrieve training (if they wish) and be allowed to keep a gun on their person for such a situation. The body count could have been much lower.
8) How many gun deaths are their in Japan?
Gun deaths are lower in Japan, so you assume this has something to do with gun laws? This is a simple case of the false-cause fallacy. In reality, crime, generally, is lower in Japan than the US. It follows that gun-related crime would also be lower, but it does not follow that gun laws have anything to do with this; that's just your assumption. A much safer assumption is that the US has culture and class-disparity problems, not to mention the dismal state of the mental health industry.
All the evidence shows, overall, people are safer with very strict gun laws. You can make trite logical fallacy all you want, becasue that's all you have.
Thanks for your little list, but it isn't really "evidence" so much as it is a list of incorrect assumptions. If you really want to provide some evidence for your claims, try to avoid taking logical leaps and instead try providing links to some real research or something.