Margarita Yudina was seriously injured by a police officer in front of cameras on 23 January during a peaceful protest in St Petersburg in support of Aleksei Navalny. Instead of investigating, the authorities issued apologies and sought to prevent her complaining formally. They sent child protection services to check on her daughter and signalled that her sons could face military conscription. The authorities must stop harassment of Margarita Yudina and her family, and bring her assailant to justice.