Zionists take it as granted that Israel arrests each day Palestinians and keeps thousands imprisoned, but when Palestinians capture single one of them, they themselves are terribly outraged and basically hysterical about this - its like laws of nature would have been broken.

They just can't accept that others can "play the game" with the same rules as they do.

The privilege of power they enjoy in this terribly unbalanced conflict has cultivated this mindset in them that they can do things which Palestinians can't and when Palestinians do things that they considered to be their privilege - like imprisoning one of them - it shakes the basis of their view of their conflict, one could even claim that it shakes their entire worldview.