Alberta separatists have delivered more than 300,000 signatures to elections officials in western Canada, in support of their attempt to force an independence referendum in Canada’s oil-rich province. But the effort stumbled immediately as a separatist-linked group posted the personal data of nearly 3 million residents online in one of the largest data breaches in Canadian history, fomenting fears of a possible political interference crisis. On Monday, hundreds of supporters gathered in Edmonton, the provincial capital, as Mitch Sylvestre, a separatist leader, delivered the petitions to Electi