Or it could just be for attention.

Via Campus Reform:

In an effort to fight against perceived gender inequality and body shaming, male and female students at the University of California, San Diego gathered together Wednesday afternoon—completely topless.

More than 1,000 people RSVP’d to the event via a public Facebook page for the “Free the Nipple” event. The event description touted the sit-in as a “peaceful, laid-back, and safe environment.”

“Bring your curiosity, forget your shirts, and most importantly bring your love, compassion, and support for the cause,” the event description read. “Shirts, bra, tops – optional. Show up in whatever you feel comfortable with because it should be your choice!”

Women who chose to go completely topless for the sit-in were encouraged to do so as a collective group in order to “protect the safety of the individuals,” according to another flier posted to Facebook.