Bangalore, Aug 03 (ANI): Congress party workers in Karnataka took to streets in Bangalore on Sunday to protest against the revelations of the book by Congress party chief Sonia Gandhi's confidant, Natwar Singh. In the autobiography "One Life is Not Enough", Singh paints an unflattering picture of the 67-year old Congress party head, labelling her as at-times "Machiavellian" leader who has been "coarsened" by politics. On Sunday, workers of Karnataka Pradesh Congress Committee (KPCC) shouted slogans against Singh and rubbished claims made in the book.