They were the first genocidalists. Recently arrived from Siberia, promptly killed off the pre-Clovis and maybe Clovis ice-age caucasoid and australoid populations almost entirely with nasty high-tech projectile weapons. Only a few Patagonian remnants survived.

Then when the Vikings appeared and tried to settle peacefully the bastards wiped them out. These were VIKINGS mind.

There was a study done on fossilised human turds in California finding regular cannibalism; 15% of the food they were eating was human meat. Or was it 15% chance of being killed in tribal war? I forget. Maybe both. Anyway these people were savages.