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Photoshopped images of Mark Zuckerberg, Narendra Modi and several Bollywood stars - all wounded by pellet guns - are trending in Kashmir. They are part of a campaign to raise awareness about unrest in the region, which also claims Facebook is censoring posts about the story. But what lies behind the allegations? And – is it possible to trademark a hashtag? Even one as simple as #Rio2016 to celebrate the forthcoming Olympics? We take a look at the US Olympic Committee’s attempts to stop some companies from using the phrase online. Produced by Kate Lamble Image credit: Never Forget Pakistan