Mark and Ros Dowey, parents of 16-year-old Murray Dowey, who tragically took his life after being targeted by sextortionists, appeal to criminals in Nigeria to stop their abusive actions. They also criticize social media companies for failing to protect young users. The Doweys are participating in the Fearless campaign, which aims to raise awareness about the dangers of sharing intimate images online and helping victims. They emphasize the need for intervention and support for those affected by sextortion.