"SEPTA says it will no longer enforce a short-lived policy requiring riders to wear facial coverings after a widely shared video showing a man being dragged off a bus, allegedly for not wearing one, prompted confusion about whether masks were mandatory while riding public transit.
The video shows several Philadelphia police officers forcibly removing the man, who is later heard saying he was taken off the bus for not wearing a mask."
https://www.inquirer.com/transportation/septa-face-masks-requirement-coronavirus-20200410.html