Ex-LDS, so I can vouch for most of what has already been said.
The LDS is big on foreign missions, so they have missionaries all over the world. You see, every male member eventually joins the priesthood in order to go on these missions. By the by, they are NOT allowed to watch TV during this time, nor listen to any sort of media. I got out before I had to deal with any of that crap, though.
And between the "posthumous" conversions and their treatment of LGBT people, the LDS can go play chicken with a semi.
I hope your brother gets out, sooner than later, man. I really do. I wouldn't wish it on anyone.