I once witnessed a jumped up base supervisor ‘briefing’ new Cabin Crew that they were expected to take abuse from passengers as part of their job, and should never offload anyone as it caused delays
On a more cheerful note with a happy ending. My former airline operated a 727 Hong Kong to Taipei - Guam and onwards to various Central Pacific atolls. This was back in the early 1980's. On board one flight were several Pacific island seamen returning home after a shipping contract. One was a real nuisance, continually touching up one of the shy Pacific island air hostesses. She tearfully complained to the captain, a no-nonsense character who was a former Kittyhawk fighter pilot during the Pacific war against the Japanese.
Top of descent into Taipei, the captain handed control to the first officer, left his seat and went down the back and ordered the bloke to desist or face the consequences. The seaman considered himself a bit of a bush lawyer and argued with the captain. The captain gave him two choices. Either behave himself or the captain would arrange for him to be off-loaded at Taipei where arrangements would be made to have him tortured by the police before being thrown into indefinite jail. The seaman sat back cowed in his seat and was a model passenger all the way back to Tarawa (Republic of Kiribati).