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.
Yeah western media are generally known to not ever spread atrocity propaganda, particularly against China.