The secret language politicians are using - BBC News
Video Channel: BBC News
Politicians are using coded language to "manipulate people" into making decisions they wouldn't normally be "morally comfortable with," a political language expert has told the BBC.
This kind of political message – which only a particular target audience is meant to understand – is known as a "dog whistle," Professor Jennifer says.
Some have claimed these tactics were used to make people think Barack Obama was a foreigner. Others said UKIP's "Breaking Point" poster was a racist dog whistle.
So how does it work?
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