The video, which is for a new song off their new album "Mania," centers around a Dia de Los Muertos-themed party.
The video shows the four band members celebrating the Mexican holiday, surrounded by women in sugar skull makeup, processions, and dancing.
Though the video does seem to show an authentic representation of the holiday, the song has nothing to do with Mexican culture, nor are any of the band members of Mexican descent.
"I think it gave us the space to create something brand new," lead bassist Pete Wentz said.
"The world can be a big lonely place, especially for kids who are trying to figure themselves out. I think sometimes we can forget that ... that's who 'Mania' is meant to speak to. That's who I want to reach," he added while discussing the album's inspiration.
Some die-hard fans are totally here for the video and FOB's new style:
Others, however, aren't quite as onboard with the band's video choice:
While the band surely has good intentions and wants to honor Mexican culture, the line of "cultural appropriation or not" is a thin one. Dia De Los Muertos is a religious holiday, and it's not surprising to hear some people are worrying the band is co-opting a sacred day to make their music video look cool.