for example: Everyone must have a gun and be trained to use it. Everyone must use incandescent light bulbs. Everyone must drink a 16 oz soda every day. Everyone must use plastic bags at grocery stores to avoid health problems with reusable (salmonila-contaminated cloth bags). And so on..... Start with the exact opposite extremism as the opponent.
No.
If another man can tell me that I “must”, then another man can tell me that I “must not”.
It is I who tells my representative musts and must nots, not the other way around.