Congress Vice President Rahul Gandhi today said that party leader Mani Shankar Aiyer should apologise for his comments against Prime Minister Narendra Modi. <br/><br/>In a tweet, Mr Gandhi said, he does not appreciate the tone and language used by Mr Aiyer to address the Prime Minister. He alleged that BJP uses filthy language to attack the Congress party, but, the Congress has a different culture and heritage. <br/><br/>Finance Minister Arun Jaitley said, Mr Aiyer's derogatory remark against the Prime Minister displays a mindset that only one elite family can be a ruler.