The best interaction I ever had with the TSA was when I came upon a pair openly wearing their uniforms around a grocery store, so I was able to call them fascist child molesters to their faces.
You're using "fighting words" which is not speech that is protected under the first amendment.
The common response to fighting words like this is a fistfight. In this case you're making a coward's bet that they value their source of income enough not to kick your ass.
A police officer might have (legally) arrested you for trying to start a fight.