Mumbai:Megastar Amitabh Bachchan has expressed support to a campaign to promote eradication of open defecation. "Strongly support Swachh Bharat and Ministry of Drinking Water and Sanitation's August campaign. We need India free from open defecation," Amitabh tweeted. The slogan for the campaign is: "Ek kadam swachta ki aur (One step towards hygiene)." This is not the first time the cinematic icon is supporting a campaign for Swachch Bharat. Last month, he was asked to be the face of the "City Compost Campaign" under Swachh Bharat Mission to encourage citizens to use compost produced from municipal solid waste On the silver screen, Big B who was last seen in "TE3N", will soon be seen in the upcoming thriller "Pink", which also features actress Taapsee Pannu.