The former Uttarakhand Pradesh Congress Committee president and Rajya Sabha M.P. Harish Rawat has threatened a massive agitation if the State Government did not implement the Scheduled Tribes and Other Traditional Forest Dwellers Act 2006 immediately. Addressing a large number of Van Gujjars and other forest dwelling people during a token dharna cum fast at the Gandhi Park here, Mr Rawat said the Act if implemented would benefit about 20 lakh people who were under a constant threat of being uprooted from their traditional homes by the forest and other officials.