My favorite story of the Vikings explains just how inclusive they were when they discovered North America.

The Vikings actually recorded first contact with North American tribes in Newfoundland. Apparently, the Viking explorers were out in a party of 3 away from their landing site, and approached some natives near a tree line, who then came out to greet them. The description goes onto explain what the natives looked like. But then suddenly mentioned the color of their blood, and that the natives seemed excitable after the Vikings discovered this fact.

These motherfuckers stabbed a dude to see what color his blood was on first contact.

This is one of the reasons why the Vikings were eventually forced from Newfoundland. Despite their military prowess, the natives seemed to immediately decide that irregular warfare against the Vikings was the only correct result, and they would perpetually harass and attempt to murder the Vikings (with arrows from a safe distance). They were unable to conduct any amount of trade with any of the locals, and couldn't regularly return with supplies from Scandinavia.

The Vikings are the pinnacle example of shitty first contact outside of "Star Trek: Enterprise"