How we cite our quotes: (Chapter.Paragraph)
Quote #1
"Is it the part of the police department to harass me when this city is a flagrant vice capital of the civilized world?" Ignatius bellowed over the crowd in front of the store. "This city is famous for its gamblers, prostitutes, exhibitionists, Antichrists, alcoholics, sodomites, drug addicts, fetishists, onanists, pornographers, frauds, jades, litterbugs, and lesbians, all of whom are only too well protected by graft. If you have a moment, I shall endeavor to discuss the crime problem with you, but don't make the mistake of bothering me." (1.14)
Ignatius has a point: Why does Mancuso bother him? Because he looks funny? If the law is applied justly, you shouldn't be subject to harassment by the police just because of how you look. Note, though, that Ignatius does want onanists to be harassed—and we know from the rest of the novel that Ignatius is an onanist himself (that is, he masturbates). Ignatius's hyperbolic intolerance of the modern world includes intolerance of himself, so in that sense there's perhaps some justice, or at least symmetry, in his being singled out.
Quote #2
He had told Mancuso that from now on he would be strictly responsible for bringing in suspicious character, that police headquarters had a costume wardrobe that would permit Mancuso to be a new character every day. Forlornly, Patrolman Mancuso had put on the tights before the sergeant, who had pushed him out of the precinct and told him to shape up or get off the force. (1.341)
The threat of the law throughout the novel is mostly used for bullying. The sergeant's bullying of Mancuso, therefore, just seems like an extension of police work in general. If the police are in the business of harassing oddballs, it makes sense that when there is an oddball policeman, his superiors will enthusiastically harass him.
Quote #3
"A thousand dollars? He will not get a cent. We shall have him prosecuted immediately. Contact our attorneys, Mother." (2.101)
The Reilly's have no attorneys, of course; Ignatius just likes to refer to them in hopes of bullying people into doing what he wants. If Ignatius were Boethius, The Consolation of Philosophy would be about how much trouble the king is going to get in for false imprisonment once Boethius talks to his lawyers.