Yes, it's behavioral, but it's not racial.
1. Go to really poor communities in Appalachia and the South, and you'll see the real meaning of white trash. I'm speaking from experience here: my grandfather was from eastern Tennessee. The village he came from showed very ugly stereotype about hillbillies you can think of, garbage everywhere, and the same social problems you see in the inner city. Admittedly not as many drive-by shootings as in the city, but lots of drug use and meth labs aplenty.
2. A hundred years ago the same kind of squalor could be seen in the Irish and Italian slums as you see in today's ghetto, less the drugs. Same murders, illegitimacy, drinking, filth, kids gone wild, etc.
3. Through some neighbors I've gotten to know recent immigrants from Liberia. Their houses and yards are flawlessly clean, their kids beautifully dressed and well-mannered, everyone doing well in school and at work, very upwardly mobile.
4. And while we don't hear much about it, there is a huge and growing black middle class and upper-middle class buying big houses and driving Mercedeses. Some of the suburbs of Washington DC are full of $700,000 houses occupied by successful blacks whose kids ride in horse shows. No trash in their yards, believe me.
You said it, it's all about attitude and character. Race and class excuses are nothing but cop outs.
I never said it was racial. White or black has nothing to do with it. The people who climb out of poverty do it on their own. They always have and they always will. There will always be poverty no matter how many billions are wasted on it.
It is NOT racial. No one said it was.