“Has not experience demonstrated quite recently that Jack the Ripper performed his exploits under the eye of the London police — a most active force — and that he only left off killing when the population of Whitechapel itself began to give chase to him?
And in our every-day relations with our fellow-citizens, do you think that it is really judges, gaolers, and police that hinder anti-social acts from multiplying? The judge, ever ferocious, because he is a maniac of law, the accuser, the informer, the police spy, all those interlopers that live from hand to mouth around the Law Courts, do they not scatter demoralization far and wide into society? Read the trials, glance behind the scenes, push your analysis further than the exterior facade of law courts, and you will come out sickened.”

Here Kropotkin seems to be refering to the French philosopher Charles Fourier, and not the French scientist Joseph Fourier.
Anarchism: Its Philosophy and Ideal (1896)

The hell they are!
Source: Lies, Inc. (1984), Chapter 1 (p. 6)

at the bottom. Put differently, we might say that the police act to defend the interests and standing of those with power—those at the top. So long as they serve in this role, they are likely to be given a free hand in pursuing these ends and a great deal of leeway in pursuing other ends that they identify for themselves. The laws may say otherwise, but laws can be ignored.
Rights, riots and police brutality, 2020

Source: Demon Princes (1964-1981), The Star King (1964), Chapter 3 (pp. 32-33)

"Anarchist's Progress" in The American Mercury (1927); § III : To Abolish Crime or to Monopolize It? http://www.mises.org/daily/2714
Context: Once, I remember, I ran across the case of a boy who had been sentenced to prison, a poor, scared little brat, who had intended something no worse than mischief, and it turned out to be a crime. The judge said he disliked to sentence the lad; it seemed the wrong thing to do; but the law left him no option. I was struck by this. The judge, then, was doing something as an official that he would not dream of doing as a man; and he could do it without any sense of responsibility, or discomfort, simply because he was acting as an official and not as a man. On this principle of action, it seemed to me that one could commit almost any kind of crime without getting into trouble with one's conscience.
Clearly, a great crime had been committed against this boy; yet nobody who had had a hand in it — the judge, the jury, the prosecutor, the complaining witness, the policemen and jailers — felt any responsibility about it, because they were not acting as men, but as officials. Clearly, too, the public did not regard them as criminals, but rather as upright and conscientious men.
The idea came to me then, vaguely but unmistakably, that if the primary intention of government was not to abolish crime but merely to monopolize crime, no better device could be found for doing it than the inculcation of precisely this frame of mind in the officials and in the public; for the effect of this was to exempt both from any allegiance to those sanctions of humanity or decency which anyone of either class, acting as an individual, would have felt himself bound to respect — nay, would have wished to respect. This idea was vague at the moment, as I say, and I did not work it out for some years, but I think I never quite lost track of it from that time.

Source: The Plot: The Secret Story of the Protocols of the Elders of Zion (10/2/2005), pp.36-39

"Equality: the Unknown Ideal" (2001)

Item 180
Proposals for a New Law Code (1768)

1920s, Notes on Democracy (1926)
Context: Democracy always seems bent upon killing the thing it theoretically loves. I have rehearsed some of its operations against liberty, the very cornerstone of its political metaphysic. It not only wars upon the thing itself; it even wars upon mere academic advocacy of it. I offer the spectacle of Americans jailed for reading the Bill of Rights as perhaps the most gaudily humorous ever witnessed in the modern world. Try to imagine monarchy jailing subjects for maintaining the divine right of Kings! Or Christianity damning a believer for arguing that Jesus Christ was the Son of God! This last, perhaps, has been done: anything is possible in that direction. But under democracy the remotest and most fantastic possibility is a common place of every day. All the axioms resolve themselves into thundering paradoxes, many amounting to downright contradictions in terms. The mob is competent to rule the rest of us—but it must be rigorously policed itself. There is a government, not of men, but of laws—but men are set upon benches to decide finally what the law is and may be. The highest function of the citizen is to serve the state—but the first assumption that meets him, when he essays to discharge it, is an assumption of his disingenuousness and dishonour. Is that assumption commonly sound? Then the farce only grows the more glorious.
I confess, for my part, that it greatly delights me. I enjoy democracy immensely. It is incomparably idiotic, and hence incomparably amusing. Does it exalt dunderheads, cowards, trimmers, frauds, cads? Then the pain of seeing them go up is balanced and obliterated by the joy of seeing them come down. Is it inordinately wasteful, extravagant, dishonest? Then so is every other form of government: all alike are enemies to laborious and virtuous men. Is rascality at the very heart of it? Well, we have borne that rascality since 1776, and continue to survive. In the long run, it may turn out that rascality is necessary to human government, and even to civilization itself—that civilization, at bottom, is nothing but a colossal swindle. I do not know: I report only that when the suckers are running well the spectacle is infinitely exhilarating. But I am, it may be, a somewhat malicious man: my sympathies, when it comes to suckers, tend to be coy. What I can't make out is how any man can believe in democracy who feels for and with them, and is pained when they are debauched and made a show of. How can any man be a democrat who is sincerely a democrat?