Out of the 13000 deaths tallied in that statistic I quoted, 1200 were flagged as suicides. Much too large a number, but not essential to the argument. So we can leave them aside for the sake of the argument. I was talkign order of magnitude, not something accurate to 10%. Nevertheless, you may want to think about whether the gun-owning father whose kid shot himself with the gun did something "wrong" or not (let's put it into moral categories, if you don't like the word "irresponsible").
Ok, so it's 1 in 10000 gun owners per year does something bad, or one in 1000 over the lifetime of a gun (hey, 10 years is a low estimate). I would consider that too high a fraction of the owners of a deadly implement. You disagree, fine. That doesn't take away from my oiginal point, namely that your common-sense argument was based on an estimate of yours that was wrong by several orders of magnitude. As an aside: In order to illustrate why it's the 0.0something% that count and not the 99.9999something%, let me give an example : living next to a volcano that has a 10^-4 probability of erupting the next year is quite different from a volcano that has a 10^-2 probability. Even though the 99.99% probability that all goes well looks very similar to the 99% near the other volcano, I'm fairly sure that you wouldn't build your house next to the 10^-2 volcano.
What this had to do with the lower socio-economic standing of blacks, and the biasedness of the court system against them, completely escapes me. Gun owners are not born with their deadly implements that scare other people (or whatever comparison you're drawing).