In any age, the so-called progressives treat politics as their religion. Their holy mission is to use the coercive power of the state to remake man and society in their own image, according to an abstract ideal of perfection. Whatever means they use are therefore justified because, by definition, they are a virtuous people pursing a deific end. They are willing to use any means necessary to gain momentary advantage in achieving their end, regardless of collateral consequences and the systemic implications. They never ask whether the actions they take could be justified as a general rule of conduct, equally applicable to all sides.
Societies can be reshaped, humans cannot. Thus, progressivism is doomed to fail.