NEW DELHI, March 20 -- Prime Minister Narendra Modi will address 2.5 million chowkidars (watchmen) through a conference call on Wednesday, the BJP said Tuesday. Late last week, Modi launched a campaign on Twitter asking people to take the "Main bhi chowkidar" pledge, to support him in the fight against graft and social evils. The chowkidars he will speak to are people who joined the campaign. Modi has also changed his Twitter display name to Chowkidar Narendra Modi....