Apparently, anti-church trolls have reported this link as violating “community standards” to facebook, so you can’t share it, link to it, or even PM it to someone with facebook.
To help fight this, if you have a facebook accout, try and share it. Fb will stop you, but will give you a link to explain why you think it does not violate community standards. Use that link (but be respectful and polite). Hopefully, if enough people do that, it will not longer be on the banned list.
[Edit for clarification: Only the specific page on religious freedom linked above seems blocked by facebook. This post is not claiming the entire Church’s website is blocked].