People have no confidence in them . NEW : Third Baghdad bombing of the year kills seven people , including four police . Car bomb at busy Baghdad market kills at least 15 , injures 40 , officials injured . In separate incident , at least two killed by bomb in a market . Market bomb was at same location hit by double car bomb last month .
NEW : Third Baghdad bombing of the year kills seven people , including four police . Car bomb at busy Baghdad market kills at least 15 , injures 40 , officials injured . In separate incident , at least two killed by bomb in a market . Market bomb was at same location hit by double car bomb last month .