Robin Jonathan had not yet been born when Japanese imperialists killed his grandfather and uncle in Indonesia’s province of East Kalimantan. The two men, both of Chinese descent, were executed for helping Indonesian fighters in their struggle for the country’s independence.Robin, now 70, recalled the tragic events as his family’s most notable contribution to the fight to defend the “homeland” during the tumultuous years under Japanese rule.Japan occupied Indonesia from 1942 to 1945 before it…