Twitter turns 15 on Sunday, but far from celebrating, some users are making a stark plea to the social media giant on its birthday. Child sexual abuse material—often called child pornography, appears on the platform with striking regularity. The anonymity and ephemeral nature of posts makes it easier for posters to avoid detection.

In the meantime, videos rack up thousands of likes. But the child victims of the abuse are left dealing with the fallout, struggling to get Twitter to take down posts that feature their own exploitation.

“When platforms don’t actively look for or prevent this content from being uploaded, the burden falls on me to have these images removed. Each time one account gets taken down, five more take its place. It’s like a hydra, a monster that I can never defeat,” said one anonymous survivor in a statement. "I’m not strong enough to take it down myself. It’s costing me my wellbeing, safety and maybe even my life. I’m tired. I shouldn’t find photos of myself as a child being raped when I’m just scrolling through my feed. I shouldn’t have to go looking for images of my own abuse. This isn’t my job."

A new PSA from No Fixed Address and Mischief at No Fixed Address for the Canadian Centre for Child Protection highlights the issue with the impassioned testimony of survivors, performed by actors to maintain their privacy and safety. “Happy birthday, Twitter,” they say, before recounting what happened to them on their own 15th birthdays.

Celebrities like Mayim Bialik are lending their voice to the cause.

Child sexual abuse material should have no place on @Twitter. Help me raise awareness today. #TwitterBirthdayPlea https://t.co/TgML0SH50l

— Mayim Bialik (@missmayim) March 18, 2021

For its part, Twitter doesn’t provide a way for users to directly report tweets or DMs containing CSAM. It ranks lower than nearly every other social media platform, according to C3P, and lower than actual porn sites. The National Centre for Missing and Exploited Children says reports of CSAM have increased 41% during the last year.

“These survivors have had their childhoods torn from them—many much younger than the age Twitter is turning this year,” said Jordan Doucette, president at No Fixed Address, in a statement. "We see the birthday as a symbol in which we can spark meaningful conversation that leads to tangible change by putting enough pressure on platforms like Twitter to do more to protect our children online.”