No, deliberately.
THINK! What was their motive? Why did they stop the Red Cross? Why didn't they let the aid trucks through? We don't have to guess, we know, they told us. They stopped the aid from going through because if conditions in the Superdome and the Convention Center improved, more people might be tempted to go there... and fewer would be inclined to leave. They explicitly wanted to prevent conditions from improving. That is DELIBERATELY MAKING THINGS WORSE.
I don't think Blanco intentionally wished to commit genocide. I do think she (or those under her) deliberately induced suffering at the Superdome and the Convention Center in order to compel people to leave. Whether they knew in advance that this would cause death (rather than merely mass suffering) is questionable, and depends on their competence. But don't blame the simple decision to block the Red Cross on incompetence. It was a rational, intelligent decision... provided their goal was to make the Superdome and Convention Center miserable.
Was this the Greta(?) Bridge?
THINK! What was their motive? Why did they stop the Red Cross? Why didn't they let the aid trucks through? We don't have to guess, we know, they told us. They stopped the aid from going through because if conditions in the Superdome and the Convention Center improved, more people might be tempted to go there... and fewer would be inclined to leave. They explicitly wanted to prevent conditions from improving. That is DELIBERATELY MAKING THINGS WORSE.