Spain has the second largest number of unmarked mass graves in the world. They still have people living with neighbors who tortured them during the Franco years and even the current government refuses to help families identify relatives who were tortured, murdered and dumped in mass graves. So naturally they have a massive overreaction in the opposite direction and try to prove how progressive they are.
Plenty of atrocities were committed by the Progressive (”Republican”) side during the Spanish Civil War.
If they were communists they earned it
Frankly, somewhere along the decision line there was likely an Old Spaniard who saw the contradiction, smiled, then decided to let the stupid childish mush-headed Millenials underlings who constructed this garbage out of race theory burn baby burn...