Francoist repression refers to a period of time in Spain when a man named Francisco Franco was in charge from 1939 to 1975. During this time, Franco and his government punished and sometimes killed people who did not agree with their ideas and rules. Franco thought that his way of running the country was the only way, and anyone who opposed him was considered a threat.
Imagine you're playing a game with your friends. You have a rule in the game that everyone should follow, but one of your friends doesn't want to play by that rule. Your friend keeps doing whatever they want, even if it's not fair to everyone else. In this situation, you might get really mad at your friend and not want to play with them anymore. This is kind of what happened in Spain during Franco's time in power. Franco had his own rules, and if people didn't follow them, he punished them by taking away their rights or harming them.
Francoist repression affected different groups of people in Spain in different ways. Some groups, such as Communists, anarchists, and liberals, were considered enemies of the government and were often arrested and imprisoned. Some people were even killed. Others, like the Catholic Church and members of the military, supported Franco's government and were not punished.
To summarize, Francoist repression is when the government of Spain during the time of Francisco Franco used punishment and violence against people who did not agree with their ideas or rules. It was a way to force everyone in Spain to follow what the government wanted, even if it wasn't fair to everyone.