Hong Kong once was a refuge for Vietnamese and mainland Chinese who fled their homeland on boats in pursuit of freedom. Now Hong Kongers are fleeing their own city in the same way, and not all of them make it to safety. The Chinese Coast Guard last week intercepted a boat carrying a dozen Hong Kongers, who ranged in age from 16 to 33, trying to sail to Taiwan. Some of the boat people faced serious charges related to pro-democracy activism or their role in last year’s protests. ...