Aonla: Congress President and UPA Chairperson Sonia Gandhi took on SP, BSP and BJP while addressing a party election rally at Aonla in Uttar Pradesh as part of her ongoing campaign for the Lok Sabha polls. "I feel very sad to see that some parties are trying to damage the rich culture of unity and togetherness. They try to destroy our tradition of unity in diversity and spread hatred among people for their narrow political gains. They try to divide the people in terms of caste, religion and community. Their ultimate aim is to grab power and only people can teach them a lesson", urged Sonia Gandhi.