They actually did it

Just like the ritual rapes of young boys in the Iddle East. These people will excuse anything anywhere else but condemn good things in America

Wait till you hear what happened to the civilization you are referring to

They got conquered by other Mayans cities and/or abandoned their cities

Yes and after that chaining down for several hundred years, the Spanish showed up with metal armor and firearms and ended the violence.

The Spanish enslaved people and forced them to mine gold and silver, but they stopped the ritual killing. A violent empire was removed by another violent empire

Yes, a less violent one.

It’s kinda hard to quantify that, but it’s a matter of opinion