Spending so much money has given some travelers a sense of entitlement, the authorities have said, and the Chinese government took the unusual step this year of creating a blacklist to block travel visas for some of its more offensive citizens — among them a passenger who threw hot water on a flight attendant in a dispute over seats.

Some experts say the obnoxious behavior reflects a modern, egotistic view of travel.

“Travel today is very cheap and people think they can do whatever they want in a globalized world,” said Mark Watson, executive director of Tourism Concern, a London organization that promotes ethical tourism, offering guidelines such as knowledge of and respect for local communities. “It’s changed from a holiday where you engage with different cultures to an opportunity to drink alcohol very cheaply and get very drunk.”

The ability to record and disseminate the wildest moments has contributed to the reputations of places like Magaluf, where “drunken tourism” — as it is called in Spain — has gotten so out of control that the newly elected mayor wants to recruit police officers from Britain to help manage British tourists who flock here during the summer. The city has also requested help from the Civil Guard, the Spanish equivalent of the National Guard.

Last year, a video surfaced of a game played by tourists in a Magaluf club that awarded a cocktail as a prize for performing oral sex. This season, a clip circulated of a half-naked dwarf whipping a groom-to-be at a stag party.

“The video was like an explosion,” Alfonso Rodríguez, the mayor of Calvià, which includes Magaluf, said of the oral-sex clip. A former schoolteacher, he attributes his election victory in May to a backlash generated by excessive tourist behavior.

“The reality has changed,” Mr. Rodriguez said. “The impact is that a bad image of Magaluf is multiplying on social networks, mobile phones, YouTube, Facebook, Twitter,” he said.

“This is damaging,” he added, “because the good image of Magaluf — its hotel investments, the beach, the surrounding region — is not news.”