The Spanish themselves conducted many religion-motivated rituals of human sacrifice in Europe and in the Americas.
In Europe, there was the Inquisition, with ritualistic torture using medieval torture devices, burning people to death, etc. Motivated by religious beliefs, just like the ones in the Americas.
The Spanish also conducted campaigns of extermination. Some recent ones: the Reconcentrado policy in Cuba, and the usage of chemical weapons in the Rif war.
In Europe, there was the Inquisition, with ritualistic torture using medieval torture devices, burning people to death, etc. Motivated by religious beliefs, just like the ones in the Americas.
The Spanish also conducted campaigns of extermination. Some recent ones: the Reconcentrado policy in Cuba, and the usage of chemical weapons in the Rif war.
Just an example: http://www.latinamericanstudies.org/1898/reconcentrado-2.jpg <- Spain, a Western country, did this
Going back to your post: maybe their portrayal is accurate, but Spain was not any better.