The attackers seem to have timed their assault moments before the arrival of the train, allowing them to escape before authorities arrive.
Other passengers mill around, some with casual observation, as if the beat down is typical behavior.
America's urban mass transit systems are used almost exclusively by non-white people. Even white-privileged liberals avoid the violence. Such violence explains why Jim Crow laws segregated mass transportation including train stations.
Security personnel strolled to the site after the attackers and their victims boarded the train.
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The brawl, involving students from Benjamin Franklin High School, even spilled onto the tracks, with one person falling onto the line during the confrontation.
As a train pulls up, both the victims and some of the suspects appear to get on the same carriage.
Witnesses tried to intervene, but couldn't break up the group as the assailants kept on hitting the helpless youngsters.
About a dozen students appear to be egging the fight on which officials have said may have started because of a dispute over a girl.
The victims were allegedly followed into the station from the street. As they got onto the platform, someone pointed them out with a signal.
Southeastern Pennsylvania Transportation Authority Police Chief Thomas J. Nestel III told Philly.com: 'It’s an outrageous event. This is so dangerous, it’s not even funny. We have operating trains down there. There are passengers waiting for the train... it’s horrendous.
'We've identified some potential aggressors. There is a criminal investigation with the school district," Nestel said. "The message that we're trying to get out is if you act up on SEPTA, we're going to have a picture of your face and we're sharing it with the school district.
School district spokesman Fernando Gallard also told the news website those involved could be expelled or face serious disciplinary action.
'What we have seen is a brutal violent attack that could that could have ended with a loss of life.'
SEPTA detectives are said to have spoken to the two boys who were victims in the attack.
Image credit: dailymail.co.uk ####
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