Actor, mockumentarian and (now) documentary filmmaker Harry Shearer will be at the International House (3701 Chestnut St.) on Friday, July 22, to screen and discuss “The Big Uneasy,” his film about the real reasons behind the flooding and devastation of New Orleans.

Shearer’s work has ranged from the role of Derek Smalls in “This is Spinal Tap” to the voices of Principal Skinner, Mr. Burns and Ned Flanders on “The Simpsons.” He writes about “The Big Uneasy”:

“Media coverage of tragedies can become so pervasive that we no longer remember the tragedy anymore, we only remember the coverage. So if I say “New Orleans” and then say “flood” you immediately think “Katrina.” As in Hurricane. This is not your fault; it’s a reflex now, like your leg kicking upward when the doctor taps it. Only that tap is causing you to kick me, and my fellow New Orleanians, squarley in the crotch. The reason I made this film is because the hurricane did NOT cause the flood, despite what you have heard on the news. However, poor science and even poorer management did.”

The film begins at 7 p.m. and is 98 minutes long. Here is a trailer: