Transformation masks were worn ceremonially, used by dancers and represented or illustrated the connection between various spirits. The masks usually depicted an animal transforming into another animal or a spiritual or mythical being. Masks were representations of the souls of the mask owner's family waiting in the afterlife to be reborn. Masks worn during ceremonial dances were designed with strings to open the mask, transforming the spiritual animal into a carving of the ancestor underneath. There was also emphasis on the idea of metamorphosis and reincarnation. With the banning of potlatches by the Canadian government in 1885, many masks were confiscated. Masks and many other objects are considered sacred and designed only for specific people to see. It was unknown who the wearer of the mask was as each mask was made for each individual's soul and spirit animal. Due to the confiscation of the masks and the sacred meaning to each individual who wore the mask, it is unknown if the masks in museums are truly meant to be seen or if they are an aspect of European colonialism and the rejection of Haida religious and spiritual traditions.