Emboldened by their "rising clout" in Canada, pro-Khalistani extremists (PKE) have started openly intimidating minority Hindus there and many instances of defacing of temples have been reported, people with direct knowledge of the matter said. "The open threats by Khalistanis to the physical security of Indian missions and diplomats in Canada is a very serious development and challenges the obligation of Canada under the Vienna Convention," a senior government officer who's closely monitoring the situation said, requesting anonymity. It appears there are different scales for measuring human rights, the officer said.