As popular as Britney is, it's no surprise that she'd attract quite a crowd to the set of her video shoot for her second single off the Blackout album, Piece of Me. But one female security guard got a little over-protective of our Queen B, threatening to mace or pepper spray the photogs if they got too close! But did she go too far? One paparazzo claims she did - according to the photog (NOT one of ours), she pushed him to the ground after threatening him with pepper spray! The pap filed a police report on the alleged incident - man, that must have been one tough woman!