Watch Justin Bieber Knock Down "Paparazzi" Camera While Shopping With Selena Gomez

Justin Bieber is on the defense on Twitter after video has surfaced of him knocking down someone's camera while shopping with Selena Gomez at a 7-Eleven.

OK! GALLERY: JUSTIN BIEBER FLIES SOLO ACROSS THE POND

Justin just apologized for flipping off photographers on his birthday saying "he knows better" and now he was filmed knocking down a camera.

But this time, the 17-year-old is not apologizing.

"the lady in the store was paparazzi not a fan," Justin Tweeted today tweeted about the video below. "I would never mistreat my fans. ill never change. ill always be the same. #ipromise"

OK! GALLERY: JUSTIN BIEBER HAS "MIXED FEELINGS" ABOUT BIRTHDAY; FLIPS OFF PHOTOGRAPHERS

Do you think Justin was justified in knocking down the camera if it was actually paparazzi?

Do you "beliebe" Justin when he says he'll never change?

Watch the video below!