Don’t Complain About TSA

Warning: TSA security looks at people who complain about TSA security.

Don't like the way airport screeners are doing their job? You might not want to complain too much while standing in line.
Arrogant complaining about airport security is one indicator Transportation Security Administration officers consider when looking for possible criminals and terrorists, CNN has learned exclusively. And, when combined with other behavioral indicators, it could result in a traveler facing additional scrutiny.
CNN has obtained a list of roughly 70 "behavioral indicators" that TSA behavior detection officers use to identify potentially "high risk" passengers at the nation's airports.

One of those indicators:

"Very arrogant and expresses contempt against airport passenger procedures."

So just take off your shoes, do what they say, don't talk, smile, and there won't be any problems.
But think about it. If you're a terrorist trying to get on an airplane, the last thing you would do is draw attention to yourself by making a fuss over the screening procedures.