UA Flight crew fights back after termination

first off this is not graffiti, and secondly, i had noticed this aircraft 2 times with the same faces and bye bye written on it during the summer, FA's have this thing about them,that they are better then everyone else, but really, all they are, are fancy waitresses, if the Flight deck crew deemed it a none security threat and they didn't want to work that leg, that is on them,