Well kiddo, a long time ago in Spain, some people didn't like the government and they wanted to change it. But instead of using words and peaceful actions to make changes, they decided to use violence and terror to scare people into doing what they wanted. This time was called "White Terror."
The people involved in White Terror wanted to get rid of anyone who didn't agree with them, like lawyers, doctors, and even regular people. They scared them by hurting them or their family members. This made it hard for people to speak up because they were afraid they would get hurt too.
White Terror was a really bad time in Spain's history because it hurt a lot of people and made them feel unsafe. Luckily, it eventually ended and now Spain has a different government system where people can speak up and make changes in a peaceful way.