Toronto serial killer and ex-landscaper Bruce McArthur was sentenced Friday to life in prison on eight counts of first-degree murder. “We must protect the public from a serial killer,” Justice John McMahon said in an Ontario court before issuing his verdict of concurrent sentences. McArthur, a 67-year-old landscaper, pleaded guilty last month to sexually assaulting and murdering eight people with ties to the Gay Village district in Toronto after authorities discovered seven of the men buried last year on property where McArthur had worked as a landscaper. The eighth man was discovered in a nearby ravine. McArthur will be allowed to apply for parole after spending at least 25 years in prison, at the age of 91.