In June 2017, a man took a photo up Gina Martin's skirt at a music festival. The police told her that this was not a sexual offence; the man would not be charged.

The law had let Gina down, and her first reaction was resignation. But something inside her had snapped. Gina was tired of accepting sexual harassment as a fact of life.

Eighteen months later, she had changed the law and made upskirting a criminal offence.

Now, Gina wants to empower you with the tools and courage to challenge injustice and fight for change, whether it's in your school, workplace or community, or even on a global scale. Filled with practical advice, the book includes guidance on how to write a compelling press release, set up an e-petition, find pro-bono legal support and secure media coverage for your campaign.