ISLAMABAD- Chief of Awami Muslim League (AML) Sheikh Rashid today came forth in support of Pakistan Tehreek e Insaf chief Imran Khan, who is pursuing a vigorous campaign against irregularities in last year's general elections. "It's unfortunate that the government is destabilizing the democracy which has threats from none other than the PML-N government itself," said the AML president while speaking to media persons alongside Imran Khan outside the Parliament House. Sheikh Rasheed called for investigation into by-polls held in Punjab. "Rulers are afraid of mass movements," he said.