New Orleans is one of the most racist places on the planet.
There is a sizably large population of blacks in New Orleans who have always hated white people and have targetted them for murder, rape, theft and abuse. That is the un-PC truth of New Orleans. I know, I used to live there.
That's not only Nawleans...that's all over the country...
And while I frequently stray over the bounds of PC when it comes to subjects such as this I can slightly disagree with you. I worked in the area for a year back in the mid Eighties and out of the ethnic/racial groups I found the black people the friendliest of all. So when this crap surfaced this week I was shocked and saddened for all of NOLA.