An easy example is modern activist tactics, i.e. Seattle and Occupy Wall Street. Another hackneyed example is Israeli military tactics, which have been said to have been influenced by writings of Gilles Deleuze.
Above and beyond specific examples, it's important to note that world affairs are influenced considerably by people in positions of power. Such people tend to be well educated, which often means they've been exposed to and influenced by contemporary philosophy. For instance there is a large body of work on international politics. I don't think it's too much to assume that policy-makers at that level have some knowledge of current discourse in the field. For instance the debate about whether a world government would be a good thing.
Above and beyond specific examples, it's important to note that world affairs are influenced considerably by people in positions of power. Such people tend to be well educated, which often means they've been exposed to and influenced by contemporary philosophy. For instance there is a large body of work on international politics. I don't think it's too much to assume that policy-makers at that level have some knowledge of current discourse in the field. For instance the debate about whether a world government would be a good thing.