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A new video shows U.S. Rep. Steve Knight (R-Palmdale) confronting a protester during a discussion about immigration.

The heated confrontation occurred Friday outside Knight’s district office in Simi Valley, where a group holding “Stop illegal immigration” signs had gathered during an open house event. The entire encounter was filmed and a video was later posted to YouTube.

A protester, who called himself “Mike,” approached Knight, shook his hand and said, “You told me you didn’t vote amnesty and you did. I looked it up on the Internet. You lied to me.” He then patted Knight on the arm.

As the protester walked away, Knight approached him and said, “If you touch me again, I’ll drop your ass.”

Click here to read the full story on LATimes.com.