I am sure there are those out there who hated when Pope Saint John Paul II apologized to many different groups that he felt the Church had offended over the centuries, such as the Jews, the Protestants and others. Saint Pope John Paul II was one who asked for forgiveness of others and for the actions of the institutional Church.
Should not bishops, (including the Bishop of Rome) priests, deacons and religious apologize to those they have offended and sometimes from an institutional corruption, such as the corruption that has fomented the greatest crisis for the Church since the Great Schism and the Protestant Reformation, the abuse of children by clergy and how this was managed by the institutional Church locally and internationally? Yes! Reparation should be made also, especially in the spiritual sense!
So on Monday Pope Francis apologized to Italian Pentecostals and evangelicals for how other Catholics treated them especially during the Fascist period in Italian history of the 20th century.
My Italian mother use to tell us how horrible the Fascists were. She knew first hand in Livorno. In fact to call someone a Fascist was a very derogatory term, a form of name calling. Fascism in Italy had is corollary in Nazism in Germany although the latter more virulent.
Evidently, as a small minority, Protestant evangelicals and pentecostals were very poorly treated in Italy in this period of fascism. I would suspect Catholics in Italy treated them in a similar fashion as Irish Catholics were treated in the late 1800's and early 1900's here in the USA.
Should not the head of the Catholic Church, the pope, apologize for the bad behavior of Catholics? Yes! Indeed His Holiness should and kudos to him for doing so. Who could find fault in that?