Most readers probably know that the character of the amoral nihilist Peter Verkhovensky is based--not too loosely, either--on the real-life figure of Sergei Nechayev (pronounced neech-aye-eff), who collaborated with the anarchist Bakunin while they were both hiding out in Western Europe. (Bakunin finally learned that Nechayev was a total fanatic who'd stop at nothing--even blackmail, betrayal, and murder--and disassociated himself with Nechayev, warning friends against him.) Nechayev murdered a member of his conspiratorial group, suspecting the victim of betrayal, a scene portrayed in the novel.
What most readers may not know is that Lenin was fascinated with the career of Nechayev (who was eventually caught for the murder and extradited to Russia, where he died in prison), called him a "titanic revolutionary," and said that Bolsheviks should try to find everything Nechayev had ever written, and study it. If Peter Verkhovensky was a caricature, he turned out to be a caricature that came to life in Lenin and Hitler and Stalin. Yet it is important to remember that these men were not, and could not be, dangerous all by themselves. It is only the possession of an ideology that makes them dangerous, ESPECIALLY if it is one that claims to be supremely moral and virtuous. Why is this so? Because self-righteous people who believe themselves to following a supremely moral path would almost certainly conclude that anyone who OPPOSES this supreme virtue must therefore be supremely IMMORAL--and what should be done with immoral people? Dostoevsky tells us something very important here: ideology kills, especially if it's the kind that exudes proclamations of goodness and virtue. In CRIME AND PUNISHMENT, he has the policeman Porfiry Petrovich tell the murderer Raskolnikov: "You know, it's just as well you only killed the old woman. Because if you'd come up with another THEORY, that would have been a thousand times MORE hideous."
In THE DEMONS, Dostoevsky has Peter Verkhovensky admit to Stavrogin that he is a rogue, not a socialist. But he had socialism to use as a foundation--a rationale--and he used it. Without it, a rogue would just be a rogue, no different than an ordinary criminal. But Peter Verkhovensky is far from ordinary.
Dostoevsky knew he'd be called a "reactionary" for implying that ends-justify-means fanaticism--terror and immorality in the name of a "better world" to come--must end in utter destruction. But he nevertheless went ahead and wrote this novel to illustrate this theme. And Lenin, admiring Nechayev, did exactly what the great novelist foresaw--he created a monstrous tyranny that destroyed Russia, perhaps (as we are now seeing) even beyond repair.
We admire Orwell's 1984 for its insights and innovative ideas, but THE DEMONS turned out to be the more accurate and prophetic book of the two. Russian novels tend to be long on characterization and short on plot--as well as very lengthy--but don't let that deter you from reading this masterpiece.
Incidentally, I once queried the companies who write student guides for novels (i.e., Cliff's Notes; Monarch Notes) about why no such guide had EVER been written for this book (even though they do exist for Dostoevsky's CRIME AND PUNISHMENT), and even though the collapse of Communism should have produced a renewed academic interest in THE DEMONS. The reply was that professors assign Dostoevsky as class reading less and less, and that very few assign this book, so there wouldn't be enough of a market for such a guide. Class reading, hell -- the profs know full well how devastating this novel would be to their own efforts to instill their own utopian political beliefs in their students. As Malcolm Muggeridge once said, everything that happened in 20th century Russia was predicted in this novel. This was what originally inspired me to read it, and he was right.