I did not even know this was going on.
Oh my god! A mayor deciding to suspend one article of the constitution. Wow!
Interestingly, the second amendment (like the whole bill of rights) only applies to the Federal Government. Some of the Bill of Rights has been 'incorporated' into the 14th amendment against the states. But that was just left-wing judicial activism expanding federal judicial power over the States. A proper interpretation of the Constitution would allow the states to do pretty much whatever they want vis-a-vis firearms.
Louisiana laws allows for much infringement and abridgment of the RKBA during a State Of Emergency. However the constitutions of the US and LA make no such exceptions, AFAIK. I know the US Constitution does not.
It's pretty well settled that any law in contravention to the Constitution of the state in question, or of the Federal Constitution is not a law at all, no one is obliged to obey such as fax "law", nor is any court allowed to enforce it.
the old lady video
http://www.freerepublic.com/focus/f-news/1481673/posts?page=11#11