You may have gone and helped clear and rebuild.
You may have sent what money you could.
You may have railed at politicians about what happened (and what hasn't).
Here's something you can do, and it'll take you just over a minute.
Watch this.
And shake your head in disbelief that things are really that corrupted.
Here's the organization, levees.org, behind the effort (h/t Newsie for the reminder!)
If enough people watch this, it'll get some sort of YouTube showcasing, which will help ensure that even more people see it.