The University of Kyoto is threatening to remove a temporary residencial facility that belongs to a labor union to end their partial occuaption of the campus. As I write this, it's 10 a.m. (JST), which is when they warned they'll do it.
The school's got a phone number:
You can leave a message addressed to the President and Board members there. Neither the operator nor the secretary has done anything wrong, so be as respectful as possible when you call. If you just say "don't do anything unlawful," that'll be enough.