Graffiti or something more sinister?

At The Aviation Nation:

The first time flight attendant Charlotte Smith* found the mysterious writing inside the bathroom cabinet of a 757 aircraft while flying for a major airline, she got spooked. It was February 23, 2005. A flight attendant for twelve years, Charlotte was working the coach class cabin of flight 853 traveling from New Jersey to California. Everything was normal, until her discovery.

In the first of a series of interviews, Charlotte explained:

“By a fluke, I opened up a compartment in the mid-galley lav [lavatory] and there it was, on the back of the cabinet behind where you refill the paper towels:

CHENAULT LIVES

ZATU

The three words Charlotte found were handwritten in black marker and in capital letters. Puzzled by the presence of odd handwriting on an area of an airplane that is off limits to passengers, Charlotte began to look further. She then opened up each of the compartments in that lavatory, carefully examining each panel wall. That’s when she discovered another set of words, also written in black marker, but inside a different cabinet.

Read the whole thing.

ADDENDUM: I finally moseyed over to the graffiti page. 64AB... I'm not connected with law enforcement, but the thing that comes to my mind with the letters "AB" is the Aryan Brotherhood.

And as the article points out, "Chenault" could stand for Marcus Chenault, the nutjob who murdered MLK Jr's mother in 1974.

Perhaps this graffiti isn't related to Islamic terrorism, but a more homegrown group of extremists?