Enlarge / Facebook CEO Mark Zuckerberg in 2017. (credit: Mark Zuckerberg)

A Facebook content moderator named Selena Scola has sued the social media giant, claiming that repeated exposure to graphic and disturbing images has given her post-traumatic stress disorder.

“From her cubicle in Facebook’s Silicon Valley offices, Ms. Scola witnessed thousands of acts of extreme and graphic violence,” her lawsuit says.

The lawsuit quotes another Facebook moderator who told the Guardian last year, “You’d go into work at 9am every morning, turn on your computer and watch someone have their head cut off.” Some Facebook moderators are also exposed to child pornography.