A violent menace repeatedly slashed a 46-year-old straphanger in an unprovoked early-morning attack on a Manhattan subway train Tuesday, cops said.

The 23-year-old woman was standing on the A train platform when she was pushed into the side of the subway car as it pulled into the station.

A homeless man accused of shoving a woman into an arriving Manhattan train on Monday said the voices in his head chose her as his victim. Transit cops cuffed 26-year-old Markeese Brazelis at the 181st Street station on the A line not long after he allegedly pushed the woman at the preceding stop,