To everyone who ignores, uses, abuses, ridicules, or in any other way mistreats the elderly.
You will eventually be elderly.
By then the world’s population will be nearly ten billion. No one will care then if you live or die. Probably they’ll want you dead since famine, not enough clean drinking water, or suitable housing will be the norm. Masses of people will migrate from country to country fighting for survival. You’ll be considered unnecessary baggage.
Think of it as justifiable Karma. The respect you give now is the respect you’ll receive then.