Y’all do realize that during the recovery efforts after Katrina, the government sent in police and other law enforcement agencies (in force) from wayyyyyyyyy far away...
That made it easier to justify the crackdowns they were experimenting with during that time...No real relationships with the indigenous civilian population...
Remember that a key experimental crackdown (door to door gun confiscations) in Katrina came to an abrupt halt when some of the insiders made clear it was a very bad idea. Remember too that none of the confiscations involved people shooting back, and that some owners were left alone when it was made abundantly clear that they would.