Another Hashtag Hijack: NYPD's Twitter Campaign BackfiresThe New York Police Department got a little more than it bargained for on social media when Twitter users hijacked its #myNYPD campaign.

Trending onTwitterisn't always a good thing.

The New York Police Department found that out the hard way when it invited its followers to post photos of themselves with the boys in blue and hashtag it #myNYPD.

@NYPDnews#myNYPD#wallstreetpic.twitter.com/WCREuIjNjZ

— vane•matus? (@vanvanmt)April 22, 2014

Some posted pleasant, smiling photos. Others, not so much. (You know know where this is going.)

Photos of police brutality took over the hashtag. Some had creative captions, and some photos were disturbing.

You might not have known this, but the NYPD can help you with that kink in your neck.#myNYPDpic.twitter.com/fzUok1FWXG

— Cocky McSwagsalot (@MoreAndAgain)April 22, 2014

Despite the hashtag hijacking, the NYPD is holding its head high.

NYPD spokesperson Deputy Chief Kim Y. Royster told theThe New York Timesthat the department was "creating new ways to communicate effectively with the community" and that Twitter provided "an open forum for an uncensored exchange" that is "good for our city."

#myNYPDpic.twitter.com/9A6XaGiWti

— Happy Cat (@HappyCatCentral)April 23, 2014

The NYPD's hashtag snafu is only the latest incident of its kind. This past November, JPMorgan Chase introduced a #AskJPM hashtag for a live chat thatquickly turned into a peg for harsh criticism and led the bank to cancel the chat altogether．也许更令人难忘的事件,McDonald's rolled out an #McDStories campaign in early 2012 that was supposed to inspire customers to share positive stories about their experiences at the fast-food chain, but instead inspired stories about food poisoning and vomiting.

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