I spoke with some LDS youngsters who came to my door some time back. They're friendly. I learned that they do not like being referred to as "Mormon" but instead prefer "LDS". For them, being called Mormon is derogatory.
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CNN's web site had a piece on this yesterday: https://www.cnn.com/2023/04/29/us/mormon-beliefs-explained-c...
The correct abbreviation is FLDS I think.