Ellen Barkin -- I Was Shoved by an NYPD Officer for No Reason!

Actress Ellen Barkin went on a Twitter rampage early this morning after she claims she was pushed by an NYPD officer just for walking down the street ... and the incident was shot on video.

Barkin -- perhaps best known for her roles in "Sea of Love" and "Switch" -- claimed to have seen people being arrested for no reason, as the cops dealt with Occupy Wall Street protestors in the area.

Barkin then had a run-in with an officer of her own, which she described by saying, "Just threatened on my street by NYPD,cop shoved me,both hands,onto sidewalk..Is it a crime 2 stand in the street in NY?WTF is going on here?"

Barkin was with her rumored boyfriend, director Sam Levinson, who caught the incident on video.