High-profile women on Instagram face an "epidemic of misogynist abuse".
That's according to a new report by the UK's Centre for Countering Digital Hate, which analyzed more than 8,000 messages from 5 high-profile female accounts.
Channel 4's Rachel Riley and actress Amber Herd were among those who took part in the study.
It found the platform failed to act on 90 percent of abusive messages that were reported to them by the studied accounts.
Dr Mary McCauliffe Director of the Gender Studies Programme at UCD says Instagram has a responsibility to address the issue.
"I know we are all in favour of free speech but that doesn't mean hate speech".
Instagram has strongly rebutted the report.