The 14-year-old girl seen in an online video repeatedly beating a fellow 14-year-old girl, then kicking and pushing the victim's 5-year-old brother, has been arrested. But, according to IMPD, the arrest is for an unrelated fight that took place downtown, just hours after the incident at Brookside Park.

The video is difficult for some to watch. A teen girl is seen approaching another near the playground at Brookside Park on Saturday. A group stands around as one girl punches, kicks and pulls the hair of the other.

A 5-year-old boy was with the girl being attacked. Eventually, they were able to walk away. The girl and young boy almost made it to the parking lot when the attacking girl runs up on them and strikes the little boy.

The video has been seen by hundreds of thousands of people since it was posted to the website LiveLeak, but no one is more outraged than Perry Bailey.

“It's brutal,” said Bailey, who is the girl's stepfather and boy's father. “It gets to the point where I want to do something myself to that little girl, but, I'm 34. I can't do that."

Even more difficult than watching his stepdaughter's hair being pulled and being kicked, was seeing his son being knocked down.

“She turned around and grabbed him...just threw him down,” Bailey said referring to the suspect. “Why would you do that with a 5-year-old that's just trying to defend his sister?”

"Parents aren't teaching their kids what they should be teaching their kids," added Kari Johnson, who lives across the street from Brookside Park with her husband. "That little girl - or big girl - had no business whopping on the little boy. He obviously wasn't engaged in what was happening between her and the other girl."

The Johnsons say they didn't see anything. Had they, they say they would have called police.

"We're not going to tolerate that in this neighborhood," said James. "This is our neighborhood and this is our home and we're just not going to go for nothing like that."

This case is unique because most of the evidence has been handed to them.

“Sometimes video will help us validate what the victim said occurred, and in this instance, it in fact did,” said IMPD Lieutenant Richard Riddle.

At this point, police aren't sure if the two girls had a history of confrontations or why this particular attack happened, but the video has helped detectives move forward with the case.

“I don't know the motivation of the individual that was taping the incident, and why they felt it necessary to upload the video to social media, however, for this one time, it did work to our benefit to be able to have that video immediately,” said Riddle.

“It just makes me angry,” said Bailey, who explained neither of his children is physically injured. “There was no bruises, no scratches or nothing that I can tell.”

But the emotional damage may take time to heal.

"I'm outraged. These kids are good kids that don't bother anybody, especially the little kid. It ain't right. I'm very outraged," said Dawn Swank, a friend of the victims' family.

Bailey said he has filed complaints about his stepdaughter being bullied at Washington Community High School.

Indianapolis Public Schools released this statement in response:

“The young woman seen attacking a girl in the video is not an Indianapolis Public Schools student. The victim is a George Washington Community High School student, and school administrators are assisting IMPD with their investigation into the attack. A bullying report involving current George Washington students was filed by the victim last month. That report was investigated fully and a social worker has followed up to ensure the student's concern was properly addressed.”

The victim told police, though, that she knows the suspect from school, but did not know her name. Police will not release names of anyone involved in the fight because they are all juveniles.

The suspect faces battery and disorderly conduct charges for a second fight, which happened at Illinois and Maryland downtown around 8:00 Saturday night - mere hours after the Brookside Park incident. A 12-year-old girl was involved in that altercation, and police say one of the girls was wearing brass knuckles.

The 14-year-old girl faces battery and disorderly conduct charges in the downtown fight. She has yet to be charged in the park attack.