Maharashtra ex minister Baba Siddique is the latest to be murdered by the mafia in Mumbai. In 1997, Gulshan Kumar, top Bollywood music producer, was shot dead by Dawood Ibrahim's shooters. Datta Samant, a trade union leader, was murdered in 1997. Chhota Rajan was named as an accused. Here's a look at the leaders, trade union activists killed over the years by the mafia.