Are you trying to say that because the area you talk about is irreligious people there are necessarily prone to violence?
I have no idea how you came to that conclusion, but no: that's not what I said, nor implied, in any way, shape, or form. I thought my post was simple enough, but apparently not; I shall reiterate: I live in an area with high irreligiosity (meaning there are a significantly higher number of people who answer 'no religion', 'atheist', and very low rates of attendance at place of worship), and violence is still just as common. As a percentage, rates of violence are significantly higher here than in other areas, but this owes nothing to religion or lack of it.
In brief: Humans, as a species, are violent, and will always find something to fight over; even if we disposed of religion, humans would still fight over things.
I don't understand the need to convince me of the virtues of atheism and how they have significantly lower numbers in terms of the prison population, but while we're on it, whilst that may be true in America, it's not true here; I was visiting a prison on Thursday on faith-based issues, so religiosity in our local prisons isn't as high as in the US.
Even then, assessing religion in prison is significantly more complex than 'religious people are more inclined to violence': are they nominally religious but have little religious activity? Is it related to other issues such as poverty, drugs, heat of the moment, etc? Saying they are in hopes of getting a lighter sentence? Basing it on ethnic grouping? Trying to find a group so they don't fear getting their heads smashed in? What crimes? - and so on and so forth.
"Atheists are less frequently found in prison" means very little as a statistic other than to attempt to justify how atheism is superior to religiosity. One could easily ask how many atheists had committed crimes but hadn't been caught - and even then, what brought them to it, in the same way we could ask that of the religious.
If 1,000 atheists commit crimes, and 2 get caught, and 1,000 Christians commit crimes, and 20 get caught, it doesn't mean atheists are more moral, or Christians are less moral.
The rest of your post is merely a diatribe to support your position; I'm not planning on responding to it unless you really request it.