That position makes sense if you believe that other people will actually stand with you. Personally, when I observe the way people drive in traffic, or the way they leave a public restroom, it becomes very clear to me that you can't expect the average person to show the slightest consideration for his fellows unless there is some incentive for him to do so. The GPP is a clear example of that--if the other people at the checkpoint when the little girl ran away had refused to allow them to hold the parents, the screeners might have backed down. But they all considered the risk of missing their flights, or the chance of being detained or arrested, and they decided to do nothing.
My point being, if you're arguing that civil disoberdience in the solution to this problem, I'd like for you to explain what gives you confidence that other people will stand with you. I thought National Opt-Out Day was a great idea, but it probably wasn't enough to really hurt the TSA. Maybe an Occupy Airport movement, lasting days, would do the job.