Chaos erupted in a Big Apple courtroom Saturday night as the family of the 12-year-old girl allegedly raped in the stairwell of a Brooklyn housing-project building came to blows with the twisted homeless creep accused of carrying out the horrific attack.

Eric McMichael, 27, was arraigned in Brooklyn Criminal Court and hit with a slew of new charges for viciously attacking the young girl and threatening to shoot her if she didn’t follow him into the Williamsburg stairwell Thursday night, prosecutors revealed.

But during the brute’s court hearing, many of the victim’s loved ones who packed the courtroom shouted and cursed at the suspect and judge before being escorted out.

“Another outburst and everyone is leaving,” Judge Orville Reynolds warned the enraged crowd.

Prosecutors said the

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