The MCU X-Men introduces us to where mutants have been around all this time because Professor X has been using Cerebro to erase the existence of Mutants in people's minds. Years later during the events of Endgame, Iron Man's gauntlet snap not only erased the villains but also awakened the X-Gene. Many mutants' powers began to lose control over their powers and many new mutants began to get their powers. Many people have been rioting on about getting rid of mutants and there are some protests going on about Mutant Lives Matter where they have been wanting to have mutants live with people in harmony. Therefore, The Government, Senator Kelly, and Worthington Industries decided to bring the Mutant Registration Act with the Sentinels and Magneto sees this as a threat so he decides to attack the humans. On the other hand, Charles Xavier decided to open the school for gifted mutants and train the X-Men to save the world once and for all.
