The Coster Gambit.

[Praktica]

i'm not so sure - if one did want to lull protesters/occupiers into a false sense of security, then a response of "I don't know" is probably the only response one could give...

Maybe.
But doesnÔÇÖt the ÔÇ£false sense of securityÔÇØ theory fall thru the floor a little when we know the protesters knew exactly the time and day┬áwhen the cops were coming?
There were ripples running thru the camp and they were up and prepared for it at 3.30am.

Some of the protestors were staying hotels near the protest, and noticed the police arriving. The protestors had no time to get extra people to the protest, though, before they were booted out. The "false sense of security" was over the days before the end.