According to Mexican newspaper The Yucatan Times, the American tourists attended a pirate-themed show on a boat off the port of Puerto Juárez. As the show ended, the Americans started chanting "build that wall!" to the shock and disgust of other passengers. What school are these kids on spring break from, and why don't they teach geography or manners there?
Although some Mexican passengers complained to the crew, the tourists persisted with the chant. The Yucatan Times noted that this is hardly an isolated incident, and ever since Donald Trump was elected, American tourists have gotten more "offensive, rude and haughty" toward Mexicans— in their own country.
On second thought, if the wall bordering Mexico has to be built, the best time to do it is probably when a bunch of drunk, annoying Americans are out of the country.