More CTA riders are getting attacked, like Dan Beam, who fought off six robbers

Dan Beam, 42, on the CTA Red Line platform at the North/Clybourn station. Beam fought back when he was attacked during an attempted robbery on the L on July 22. He stabbed three of his attackers before jumping from the train to safety and calling for help. Five people have been arrested on felony charges for attacking him. (Ashlee Rezin / Sun-Times)

Dan Beam had a bad feeling about the two men who crossed into his car on the CTA’s Red Line one day last month.

They sized him up. Then, one of them grabbed his cellphone.