What's wrong with these protest signs?

Just a few protest signs in Madison as various union folk gather to voice their disgust with Wisconsin Governor Walker's budget initiatives, which include severely limiting collective bargaining rights. The first two signs, I'm assuming, are being held by teachers.

On the surface, what kid wouldn't want to be taught by this lady? She exudes warmth, caring, kindness. But who cares what your working conditions are, ma'am...you're not in class teaching the children so your sign is a mute point. Go back to school.

No one's son is in your class. You're not teaching him. You're not protecting him. And you're not inspiring him...because you're not in class today. (Unless you're trying to inspire children to be irresponsible - well, then fine. You are inspiring children.)

Then you've got this dude. I hope he's not a teacher. I won't even comment.