how do kids do this?

i apologize for the extremely disturbing nature of this story from west palm beach, florida but thought this story is worth pointing out. the 3 kids arrested so far are aged 14, 15, and 16. we all hear about horrible crimes almost every day, but the physical and psychological damage done to this mother and son is about as appalling as anything i've ever heard:

According to the victims and police, there was a knock on the door at the victim's home around 10 p.m. on June 18. Police said a "male" at the door told her the tires on her car were flat. When she went outside to check, masked gunmen rushed her and forced their way inside. She was raped by about 10 men or boys, according to the report. She was forced to have sex with her son. He was beaten and had cleaning liquid poured into his eyes. The suspects fled after about 20 minutes, according to the report.