A ban was initiated at the Hilltop Children's Center in Seattle. According to an article in the winter 2006-07 issue of "Rethinking Schools" magazine, the teachers at the private school wanted their students to learn that private property ownership is evil.
According to the article, the students had been building an elaborate "Legotown," but it was accidentally demolished. The teachers decided its destruction was an opportunity to explore "the inequities of private ownership." According to the teachers, "Our intention was to promote a contrasting set of values: collectivity, collaboration, resource-sharing, and full democratic participation."
The children were allegedly incorporating into Legotown "their assumptions about ownership and the social power it conveys." These assumptions "mirrored those of a class-based, capitalist society -- a society that we teachers believe to be unjust and oppressive."
"We teachers", eh. Any school with an eye towards education would fire these bozos pronto. The parents who would pay for this travesty are a lost cause, the least of their sins is child abuse. May their children live at home forever.
h/t: The Llama Butchers