Now, had this been scheduled during a time of political/financial travel, than there might have been a higher level of participation from civic-, and liberty-, minded individuals. But during a holiday? When people simply want to get together with their families and enjoy each others company? Sorry, but it was a stupid idea to hold a obstinately political protest during a non-political holiday. Dumb, dumb, dumb.
Yes, I know many families argue politics during holiday get togethers. But that's more about family dynamics, not about politics itself.
Instead, use this as civil disobedience during, say, some major international gathering of world leaders in the United States, such as a G-20 summit. When it becomes obvious that the scanners and invasive pat-downs are used as a protest tool against other issues, then you will see some substantial changes.