A Chinese political dissident who fled to South Korea last month in a dinghy has arrived in Canada, his friend said on social media Saturday. Dong Guangping was aboard a 10.8-foot inflatable boat in the waters off a western South Korean island in May when he was detained by South Korea's coast guard for allegedly violating the country's immigration law. It was his fourth known attempt to flee China. Dong, a former police officer in China, had previously been detained several times for his