ALL centuries have had that kind of savagery.
Wikipedia:
Genghis Khan [Traditional Mongolian: ᠴᠢᠩᠭᠢᠰ ᠬᠠᠭᠠᠨ; Chingis/Chinghis Khan] 1162? – 18 August 1227), born Temüjin, was the founder and Great Khan (emperor) of the Mongol Empire, which became the largest contiguous empire in history after his demise.
Genghis Khan was the mass murderer for all ages of the human race. He obliterated 1/3 of Asia.
He was especially nasty as he KNEW that people HID their treasures and daughters, so he would RETURN to those vanquished towns after a week or so, when townspeople THOUGHT they were safe and wreak HOLY HELL on them.
His GRANDSON made Ivan the Terrible look like Heidi.
It took Asia hundreds of years to recover from them. TWO MORE of Satan's minions.
Yes, All centuries have had savagery. That includes Japan and Germans acts in mass murder last century.
Muslims have killed over 5,000 in terrorist acts worldwide his year. Religious terrorism is the savagery now.
This particular savage would have fit in well at an SS extermination camp.