"PG for mature thematic material involving sexuality, and violence"
Uh, a story that involves same sex attraction between two women is rated PG. It is based on the novel by Shamim Sarif. Agit-propo disguised as art? (Things get piled on as the story takes place in segregated South Africa--and so we are to regard moral objections to homosexual sex acts as being the same as racial discrimination.)
The World Unseen - Shamim Sarif London BFI interview
Out at TIFF - The World Unseen
When one takes into consideration the moral lessons that are supposed to be drawn from a story or movie, the kind of roles and characters actors and actresses play does say something about them as people and their beliefs. (And hence they can be called 'progressive' or 'liberal'...)