However, I know about each of the half-million dead in the USA.

Everyone used the personal pronoun "I" and everyone had the same sense of 'myself'.
Every self had experiences, knowledge, fears, hopes, plans and some (or more) existential angst.
Each was the center of a known universe, though for most their own universe ended at the epidermis.
All were certain in their knowing even when they did not know. All knew they lived in a real world even when they didn't.
All had desires, memories, non-verifiable beliefs and births from some form of family; they were known to others.
One perhaps (I am generous) did not fear death.

I hope to know that one personally.