A very sad situation in Louisiana, Alabama and Mississippi indeed, I don't know how much TV coverage you guys are getting, but is a MAJOR disaster, something like 100,000 people are left homeless and were without proper food, water and medical care for 3-4 days, hundreds of people have died, many while waiting for help to arrive.
I think it is impossible to say how people would react to a situation like that unless you are faced with it first hand, right enough the shooting is a big USA thing, but the rest of it could and probably would happen everywhere else.