Hannah Arendt's Philosophy on Totalitarianism

In 1950s, the philosopher, Hannah Arendt, was a woman who thought intensively about the nature of totalitarianism, and later identified that there is but one thing necessary for a totalitarian regime to have success. A thing that in fact also explained why, after thousands of years of political activity and social contentions, that totalitarianism has only just appeared in the 20th century. Hannah Arendt explains that this thing was a dynamic of isolation and loneliness.