There is no excuse.

As a Woman Was Raped, Train Riders Failed to Intervene, Police Say
The SEPTA train car near Philadelphia had several passengers aboard but none called 911 while the woman was sexually assaulted, the authorities said.

Several passengers were in the train car but Mr. Bernhardt declined to say how many; investigators were still working to determine the exact number, he said. While there were not “dozens of people” in the car at the time, Mr. Bernhardt said, there were enough that, “collectively, they could have gotten together and done something.”

He added that investigators had received reports of some passengers recording the attack on their phones but that the police had not confirmed those reports. . . . Bystanders on the train who failed to intervene could be criminally charged if they recorded the attack, Mr. Bernhardt said, adding that it would be up to the Delaware County district attorney’s office to make such a decision after the police finish their investigation and submit their findings.