The lesson itself is less troubling than these teachers' undertaking to shape the children's beliefs without any parental involvement or input--not, note, as part of a curricular course of study at a school, but in an after-school program at a children's center.
Still: If they'd done this to me as a kid, I'd have brought in one of my Lego pirate ships, sacked and plundered Legotown (Legograd?), and shared the booty with anyone who volunteered to join my crew.