The short: Propaganda works.
The slightly longer: Tell them that whatever groups are getting the blame for all the ills of the world are a danger to them. e.g. the whole trans bathroom controversy, decades of painting colored people as predators. Throw in some religiously-motivated "abortion is murder". On that note, US churches have kinda been doing half the work for MAGA.
We never of that kind of requirement around here. I know people who drove their old rusted metal tables to the scrapyard, obviously they didn't have any kind of proof that those are actually theirs and definitely no scrapping license. But maybe the local scrapyards might still refuse people if there's a more concrete reason for suspicion, IDK.