Setting up for a possible confrontation with the BJP, the West Bengal government has denied permission to the opposition party to hold its protest march to the state secretariat Nabanna today, citing among other things Wednesday's Supreme Court judgment on public protests at the cost of public inconvenience. The official denial by the state Home Department does plunge into uncertainty the BJP's plan for a four-pronged march to the state secretariat, which also houses the Chief Minister's office, especially since it could involve a contempt of court issue.