Open this photo in gallery: A mourner wears a t-shirt bearing a photograph of Sikh community leader and temple president Hardeep Singh Nijjar before the first part of day-long funeral services for him, in Surrey, B.C., on June 25. Nijjar was gunned down in his vehicle while leaving the Guru Nanak Sikh Gurdwara Sahib parking lot last week.DARRYL DYCK/The Canadian Press It was a jolt for Canada when China retaliated for the arrest of a Huawei executive in Vancouver by locking up two Canadian bystanders, the two Michaels, five years ago. Now a second shock shows us foreign governments are...