Yes,we know how people that lived in Christ times were morally.They were pretty fucking brutal,the Roman Empire did some fucked up shit.People nowadays are a bit better,but don't think that you are better than they were.Nazi Germany happened ~70years ago.The average person can do very ugly things in hard times.IMO,our generation is more cowardly and immoral than people were 20-40 years ago(at least in my country,i won't say anything about other nationalities).
I misread the Neanderthal stuff,sorry