*Disagree*: istr reading about Neanderthals making toys for their children, and possibly being earlier than hom sap in producing certain sorts of artwork*, both of which suggest empathy. This "other => inferior" mindset is well attested, from ancient (and modern) racism up to MAGA, and is often a dominant driver for warfare and genocide.

Required reading: Asimov's essay "Nice Guys Finish First!" (exclamation mark in original), where he argues that he's being not-nasty out of pure self-interest, because co-operation and circumspection are vital for the long-term continuance of hom sap as a species. It's the last essay in The Sun Shines Bright.

* I originally had "musical instruments", but that might be a false memory.