Imagine if Hitler had won. That's what happened in Spain. Francisco Franco governed for 40 years, till he was too old and sick to keep doing so. He never faced any consequences and died of old age.

During all those years he indoctrinated the new generations and set a precedent, culturally. So even though more than a hundred thousand people suffered and died under his dictatorship, he still has a lot of supporters that are very vocal about it and his influence still permeates spanish society nowadays. You could look up "franquismo cultural" if you're interested.