SALEM - WARNING: Video contains graphic language and violence.  
Police are looking for a woman who was videotaped beating a young mother in front of her son.

Bystanders can be seen watching the brutal attack along a Salem trail and pulling out their cellphones not to call for help, but to record the scene.

Catherine Ferreira's 2-year-old son appears to be the only one to step in to try to help her, as he repeatedly kicks the suspect's legs.

Chief John Pelura III says police are looking for 25-year-old Latia Harris. 

Ferreira says she suffered a broken nose and mild concussion in Tuesday's violent attack.

"I became so much closer to my son because he didn't care what was going on," she says. "He wasn't afraid. He just wanted to defend his mom." 

Pelura says there were no calls to 911 during the attack. "Initially, I was angry," he says. "And then it just turned to disappointment and, you know, disgust."

Dr. Rosiland Dorlen, a clinical psychologist in Summit, says the lack of compassion displayed by the bystanders is almost as troubling as the violence itself.

She believes technology has added a new wrinkle to a phenomenon known as "bystander apathy."

"I think the technology has created more distance between the bystander and the target and the perpetrator," she says. "It's as though people hid behind the screen."

Dorlen says violence is so easy to find and view, people have become jaded. Then when they are confronted with actual violence, they remain passive.

Pelura says Ferreira told officers Harris accused her of spreading rumors about her and her manager.