I wonder what would have happened if the LANG & state police had refused to recognize Blanco's authority after she jumped the shark. IOW, they should have ignored her unlawful orders to prevent people from bringing in needed supplies. From another post, the Wildlife Service should not have been preventing private citizens from evacuating people from hospitals, but instead they should have been joining their brethren in pushing the witch out of the loop. All of them could have cited Nuremberg as the precedent for their actions.
No one got the full picture on the ground. Blanco's decisions now seem ludicrous because we can see them in there entirety as played out on a time line. When it was happening, and if you were on the ground in charge of the LANG or the Wildlife Service, the small order that you received may have made sense. At least it could come down to a judgment call. It wasn't until after the Levees broke and the shooting started that the politicians in N.O. even realized they had a problem. And by then, limiting civilian access to the city probably seemed like the right idea.