In this case, New Hampshire 2nd Congressional District candidate, Democrat Annie Kuster, didn't like that someone was recording her as she was making her campaign rounds. In fact, she disliked the idea so much that she attacked the cameraman, took his camera from him, and walked off with it with a parting "F*** him."
Later she claimed that the cameraman had been harassing her, but as the post from the NH Journal claims, "campaign trackers, bloggers, regular voters and even reporters frequently use handheld cameras to record politicians." If she wants to be a politician she had better get used to being followed around by people with cameras while in public.
Kuster seems to be following the lead of her fellow New Hampshire Democrat Carol Shea-Porter, former member of the House from New Hampshire's First Congressional District and once again a candidate for her old seat.
Shea-Porter often harassed previous First District Congressmen at their public forums, being arrested more than once for her outbursts. But once she took office she made sure all of her 'public' appearances were devoid of anyone who might pull the same thing she had, meaning non-Democrats were decidedly unwelcome. In forums where she could not control the content of those attending, she made sure there was little if any time for anyone to ask her questions she didn't want to answer. She also had undisguised disdain and contempt for those who were not her constituents, meaning anyone in her district that wasn't a Democrat or independent. Republicans in her district were persona non grata. (This I know both directly and indirectly having experienced this discrimination and having heard from others who were treated to the same "You're not a constituent" blow off.) It's no wonder she was defeated by a landslide in 2010, replaced by Republican Frank Guinta, someone who seems to have no problems with helping his constituents regardless of their party affiliations. (Shea-Porter blamed the Chinese for her defeat, an accusation she has never explained.)
So once again we see the how arrogant Democrat politicians have one set of rules for themselves and different rules for everyone else.