"I am subjected to abuses on the ''Facebook'' but our fight against 'fascist RSS' will continue uncompromisingly," he told party workers here today.
In a caustic attack on the Nagpur-based Sangh fountainhead, Singh recalled that he was being ridiculed when he first spoke about the involvement of RSS elements in the Malegaon and Ajmer blast.
"But later Swami Aseemanand spilled the beans," he added.
Directing his tirade against BJP and the saffron outfits, Singh said, "Gujarat Chief Minister Narendra Modi first called the late ATS chief Hemant Karkare a traitor and later wanted to present a cheque of Rs one crore to his widow Kavita which she rejected."
He also alleged that after the Malegaon blast case was cracked, the saffron outfits instigated violence subsided.
Singh said Congress was against all types of extremist elements and when he was the Madhya Pradesh Chief Minister, he had acted against SIMI as well as the Bajrang Dal.