Paparazzo Bragged About Inciting Celebs to Lose It

The paparazzo who Louis Tomlinson allegedly attacked has gloated that he sometimes berates and incites celebrities and then watches them unravel on camera.

Karl Larsen — the photog who says Louis smashed his head on the floor at LAX Friday — went on ‘Howard Stern’ back in 2010 and boasted about his super aggressive tactics … in particular his confrontation with Mel Gibson. At the beginning you hear Larsen say, “We’re…