Sharif was speaking to the media outside the Parliament House in Islamabad on Wednesday where the PML-N was staging a sit-in.
The chief said that the PPP government had supported a dictator, former president Pervez Musharraf, and gave him a Guard of Honour instead of trying him for treason in the court.
He said survival of the common man had become difficult under present circumstances, but his party was committed to changing the destiny of the people of Pakistan.
Sharif added that the ministers of the federal government were filling their own pockets rather than taking steps to control inflation and unemployment.
The PML-N chief also blamed the government for the unrest situation in Karachi, saying that everyone was waiting to see when the references against criminals would be filed by the government, as ordered by the Supreme Court.
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