Did that happen in the Covid pandemic? No.Well, it's "justification" in the sense that a collapse of civil order with dead people lying in the streets and survivors fleeing in panic, is much worse than "exercise of government authority."
They only needed extra freezer space because they wouldn't let coroner's or funeral workers work.
You watch far too many disaster movies.
Do you genuinely believe that another Black Death, with some new pathogen, is impossible?
There you go again confusing a bacteria with a virus.
Will a Black Death occur again naturally? Very unlikely. Cases still occur but mostly in areas of poor hygiene and pest control. Being a bacteria it is treatable with an antibiotic. It is primarily spread by fleas on rats.
Could a respiratory virus evolve that has a high CFR equivalent or greater than the Black Death? Well there is one already in circulation now and it isn't Covid.