Where did this thread indicate it was from/for the Religion forum? Not trying to be a pain, just asking.
The phrase "religion-forum" should appear in the url at the top of your broswer.
If you do not wish to see Religion Forum posts, do NOT use the "everything" option on the browse. Instead, browse by "News/Activism." When you log back in, the browse will reset to "everything" - so be sure to set it back to "News/Activism."