They (Fox) are now saying those cages were for SWAT team members to get to the roof where the protesters were. I do not know the latest, though. My TV is off, as I find this very difficult to watch, and I am not Jewish.
Similar cages were used when removing Jewish towns in the Sinai. Essentially, they put the protesters in them and truck the cages off. I'd assume they'll be used the same way this time.