The horrific, tragic suicide of 12-year-old Rebecca Sedwick in Florida reminds all parents they have a duty to police the online activities of their children.

Two juvenile girls have been chargedĀ with aggravated stalking in connection with verbal and physical confrontations the girls allegedly had with Rebecca, who jumped to her death Sept. 9 after bullying by as many as 15 girls. The in-person viciousness was accompanied by cyberbullying in texts and on social media, police said.

“Yes, I bullied Rebecca and she killed herself, but I don't give a f—,” one of the girls arrested allegedly wrote Saturday on Facebook.

In an interview with ABC, the parents of the alleged bully said they were “sure” her Facebook account must have been hacked.

We're not so sure. And we wonder why the parents still allowed her to have a Facebook account.