Original sentence: He was in Berlin in 1922, attending a political conference, when two right-wing Russian assassins began firing, with the intention of killing the publisher and politician Pavel Miliukov.Nabokov's demise was tragic but fitting for a lifelong democrat: he died defending one of his political opponents
Edited sentence: He was in Berlin in 1922, attending a political conference, when two right-wing Russian assassins began firing, with the intention of killing the liberal politician Pavel Miliukov