How to report someone on Discord in 2 ways for inappropriate or otherwise rule-breaking behavior

You can report someone on Discord in two ways: through a server moderator, or through Discord's Trust & Safety team.
Ars Technica

Report: Discord admin who leaked military docs ID’d as National Guard airman [Updated]

[Update, 4:39 pm ET: On Thursday afternoon, Federal Bureau of Investigation agents arrested Jack Teixeira "without incident," The Washington Post reported. Charges are likely to follow. Anonymous ...