It's shocking to me you didn't know those things. You must have been in a radically liberal, sheltered hall in order to have not known those things were going on.
You mentioned the early 80s. You must have been around during The Great Apostasy--the equivalent of the Salem witch trials for dubs.
They were hardcore back then--it was standard procedure to read a scripture specifying what sin someone committed while they did their mass disfellowshippings. They were even ritually shunning unbaptized children (they called it 'disassociating' back then--same thing--sin announced and shunning required).
You must have lived in an interesting area that didn't even know any of that was going on elsewhere?!! Did you read the publications about shunning, oral sex, etc. back then? They used to have special needs talks.