Ravin Sampat

Image copyright AP Image caption Salman Khan, one of India's biggest film stars, was sentenced to five years in jail for running over and killing a homeless man. After a Bollywood star was sentenced to five years in jail for running over and killing a homeless man with his car, why did other Bollywood celebrities leap to defend him? Late one September night, Salman Khan's car ploughed into a bakery and ran into five people sleeping in the street - killing one homeless man.

Why the popularity of #killallmuslims is not all it seems One of the more shocking Twitter hashtags to take off after the Charlie Hebdo attacks was #Killallmuslims, which has been tweeted about 100,000 times. But its popularity is not all it seems. #Killallmuslims had been circulating at a very low level since 2013, and was given a boost by the attacks and its use by a Twitter user based in the US who was also posting hugely provocative images of Muslims and the Prophet Muhammad.

Image copyright AP Since contact was lost with Malaysian airliner MH17, there has been claim and counter-claim on social media in Ukraine. Here's a timeline of what's been posted by whom. There's been a lot of chatter on Ukraine's social networks since Thursday about who is responsible for the destruction of MH17 - the Malaysian plane carrying 298 people. But the social media story really begins almost three weeks ago, on 29 June.