Minister of Public Safety Marco Mendicino attends an interview before the first working session of the G7 interior ministers meeting in Wiesbaden, Germany, on Nov. 17.HEIKO BECKER/Reuters High-school students should be educated about how to spot fake videos and photos and disinformation, because they are so prevalent online, federal Public Safety Minister Marco Mendicino says. Speaking from the G7 summit in Germany, the minister said disinformation is “one of the most pervasive threats to all our democracies right now” and more needs to be done to raise awareness and equip Canadians to navigate its dangers. He said the “marketplace for...