The historian’s task isn’t to present what actually happened in the past, because it’s impossible. As you know, every person has their own opinion about some political or historical events. For example, if for me Bohdan Khmelnytsky uprising is a cossack revolution, then for my Ukrainian colleages it is a national war for Ukrainian independence and for Polish people it can be only a civil war (“wojna domowa“). For some people Symon Petlura is a hero, but for others he is just a “loser“. History is a subjective science.