This article on BBC News website gives quotes from world press. It's quite interesting:
I feel so sorry for everyone who's lives have been destroyed by this disaster, and of course i can't even begin to imagine what it must be like but I think people outside of the US are pretty shocked to read that tourists have been targeted by mobs. British people helping medics in the New Orleans Superdome had to be moved to the Hyatt Hotel because of fears for their safety...
I think it's a shame that I had to read this in an article about the events:
"state officials have described the chaotic aftermath of Hurricane Katrina as a national disgrace."