Footage of her daughter’s murder went viral. Now Bianca Devins’ mother wants to change the internet

Bianca Devins was kind, thoughtful, strong and just 17 years old. During her lifetime, incels harassed her online. Then, one day, a friend who had aligned himself with the incel community killed her. Holly Baxter speaks to Bianca’s mother Kimberly about how she channeled her grief into action