There was pushback against a lot of the evils of colonialism - most of them unsuccessful, like this one. Maybe we can learn lessons for fighting against the institutional evils of our time.
(As is common for feudal occupiers of foreign lands, and by no means unique to Spain) the worst kinds of psychopaths were continually elevated to positions of authority and then granted almost complete impunity to do what they wanted, with an ideology that treated the recipients of their exploitation as sub-human.
The priests and missionaries that followed them were likely the group that was most sympathetic to the natives (of course only in relative terms compared to the "conquistadors" which is a very low standard).
You're literally applying birth sin for it to make sense, because none of the Spanish people alive today had anything to do with it
Even worse, what hnidiots3 was trying to convey: 99% of the population that were alive during the time period you'd have described as "Spaniards" were entirely uninvolved in these actions, and wouldn't have supported them either, likely.
While the Mayan culture was literally doing human sacrifices - the average person living in Spain wasn't inherently evil and wanting to cause suffering to other people. Despite their culture being kinda shit.
They just wanted to live their live, which was mostly being a farmer and working.
The benefits for this was entirely with the aristocracy and wealthy, not with the average Spaniards.
Also, failing upwards of those who serve the dominant system is clearly not just a modern phenomenon.
The Spanish crown didn't have in mind to destroy other people books, but then again, they also didn't have in mind that they casually, recurrently and nonchalantly offered human sacrifices to their "gods".
Probably the order of priorities for the Spanish crown was books < human sacrifices.
Strange times, those, eh?