What social-science term describes the film-inspired Mexico City parade?

The social-science term for the film-inspired Mexico City parade is the pizza effect.

The expression describes a cultural practice that becomes popular after being exported, reshaped elsewhere, and then reintroduced to its place of origin. The name comes from pizza: a food that developed in Italy but was transformed by American mass culture before influencing modern Italian pizza-making.

In the 2015 James Bond film Spectre, the opening scene showed a huge Day of the Dead parade moving through Mexico City. No comparable annual parade existed there at the time. In response to the film’s publicity and a government effort to promote Mexican culture, authorities organized a real parade on October 29, 2016. It drew about 250,000 people.

The parade was therefore not simply an ancient tradition preserved unchanged. It was a modern event partly inspired by an international movie’s fictional depiction, even though it used genuine Mexican imagery and a real holiday. That distinction is why “pizza effect,” rather than observer, butterfly, or halo effect, is the precise answer.