Like I said to another poster, this is an effect of poverty rather than a cultural one. If you don't beleive me look at an innercity neighborhood with comparable income levels, where nonimmigrants live. However, what sets most hispanics aside is that they are willing to work and improve their lives. And yes, they are benefiting the economy doing jobs Americans will not do at anything close to those pay levels.
Then let's import more poverty and crime.
In my part of the world, that would be So. Cal, I see more YOUNG people of latino descent driving around in Cadillac Escalades. But hey. I'm SURE that a Mercedes costs more so you may have a point.