Interestingly, thought leaders at the time of European ownage of African slaves thought the differences of "races" were similar to the differences between species. I'd wager some people still do.

Laissez-faire[1] capitalism fundamentals require "freedom of the individual", but the definition of "individual" is usually not specific enough to afford it to all human beings or to prevent it from being ascribed to non-human entities. I wonder if we will ever get to a place where we recognize the intelligence of other species / non-human entities (non-terrestrials, AI, incredibly intelligent dogs/dolphins/elephants etc.) deserves these same protections in the economy.

Also worth noting that "negative externalities"[2] can also cause massive harm[3], but laissez-faire capitalism doesn't always afford for any protections against them (depending on how obvious/proximal they are to a human action/intention).

[1] https://en.wikipedia.org/wiki/Laissez-faire

[2] https://en.wikipedia.org/wiki/Externality#Negative

[3] https://en.wikipedia.org/wiki/Debt_bondage

He said capitalism, not free-market capitalism.

They are not the same thing.