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NEW YORK ( WCBS ) -- A New York University student was attacked while walking to class in Manhattan earlier this week, and police say the man in custody is a repeat offender with a history of assaulting women.

In an emotional video posted on social media, 20-year-old Amelia Lewis recounted the assault and demanded something be done to prevent the suspect from targeting others.

Surveillance video shows Lewis walking to class on Monday morning in Greenwich Village, when a man runs up behind her near Broadway and Waverly and appears to slap her on the backside and then shove her to the ground, knocking off her headphones.

Bystanders are seen frozen in shock before running to her aid.

"Just be aware when you're walking anywhere right now in New York.

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