History of the BLF "builders Labourers federation" NSW" in the 70's
this union introduced not only green bans to save parks and beautiful old buildings but alsi introduced pink bans on developement at a university where a gay man was sacked for being gay.
They refused to continue work on the site until he was reinstated.
their legacy of what was saved is still evident to this day.
https://www.youtube.com/watch?v=cvPUJS8W0f0