Canada’s antitrust watchdog alleges that Google acted unlawfully in building market share in the online-advertising business. In a notice filed Thursday with Canada’s Competition Tribunal, the watchdog—known as the Competition Bureau—said it seeks to “put a decisive end to Google’s structural dominance and anticompetitive practice, [and] restore competition” in the country’s online-advertising marketplace. Source: Canada Sues Google, Alleging Anticompetitive Online-Ad Practices