Here is a complete dismantling of this propaganda piece.

They did have their culture/religion repressed; not in totality but many practices are disallowed or only conditionally allowed. Many innocents are compelled to attend re-education centers that may in some cases restrict certain religious practices.

There were no re-education centres. That’s a sinophobic trope. There were vocational training centres. That’s all.

were almost certainly subject to abuse by police while in custody

Doubtful. There were no credible reports.