There was someone on this board at one time who along with his wife, special Pioneered or were Missionaries on the Navajo reservation. If I remember correctly, the Watchtower Society convinced the tribal elders to give them some land and allow a Kingdom Hall to be built on their reservation but it was under the condition that the building could be used by all for cultural purposes.
The Watchtower boys agreed to it but later once the Hall was built, wouldn't allow anyone else to use the building. This was part of what opened the eyes of the couple and caused them to leave the organization for good.