Kiwi singer Lizzy Marvelly is behind a campaign hoping to shift attitudes about consent and sexual violence.
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The #MyBodyMyTerms movement calls out attitudes which allow groups like the Roastbusters to form and victims to blame themselves for their own sexual assaults.
A video explaining the meaning behind the hashtag has been viewed more than 60,000 times.
"In a culture where rape survivors blame themselves for the criminal actions of their rapists where young people aren't sure what constitutes consent, where intimate photographs are shared online, and where a group of young men can form a club called the 'Roastbusters' and get away with it, we need to have some open and honest conversations," the movement's Facebook bio says.