Some pro-democracy activists from Hong Kong have faced needless uncertainties from Japanese immigration officials while trying to enter the country after completing their prison sentences, according to sources familiar with the matter.Those individuals were detained for hours for questioning or refused entry at Japanese border checkpoints, the sources added, despite a visa exemption in place since 2004 for stays of up to 90 days by visitors from Hong Kong. They were convicted of charges including taking part in illegal assemblies.Japan's Immigration Control and Refugee Recognition Act stipu…READ FULL ARTICLE