Aren't humans black boxes? Aren't humans prediction algorithms?

How do we align humans?

We don't align humans. Just look at how often in documented human history there weren't wars going on somewhere.

We align humans via the propagation of morals and ethics, primarily through parenting and social pressure.

Also millions of years evolution.

Conventionally we would call that alignment process parenting

Humans are naturally aligned with humanity.

Are they? Humans are often at war with other groups of humans. And they do absolutely terrible things to the "other" group.

Factionalism isn’t anti-human.