Bastar: Congress vice-president Rahul Gandhi, for the first time after May 25 Maoist attack that killed frontline party leaders in Chhattisgarh, addressed a mammoth Congress rally – Adivasi Adhikar Sammelan- at Jagdalpur in tribal dominated Bastar region in the poll-bound state. He launched a blistering attack on the opposition for blocking the pro-poor schemes and policies of the Congress-led UPA Government at the Centre and reiterated that his party's aim was to empower tribals and aam aadmi.