By Rochelle Baker, Local Journalism Initiative Reporter, Canada’s National Observer The chorus of First Nations leaders denouncing North Island-Powell River Conservative candidate Aaron Gunn continues to rise. The leaders are urging federal leader Pierre Poilievre to remove him for social media posts that “ advance residential school denialism,” they said in a statement released Thursday. The First Nations Leadership Council said its members are angered and disturbed, joining calls for the Conservatives to drop Gunn as a candidate for his “horrific and offensive posts” on X (formerly Twitter) between 2019 and 2021. In his tweets, Gunn argues the treatment of Indigenous people isn’t genocide, while other posts vigorously defend the legacy of the country’s first prime minister, John A MacDonald. Denying that Indigenous people faced genocide in Canada and saying…