AC ▁and ▁even ▁tried ▁to ▁over run ▁the ▁headquarters ▁in ▁one ▁protest . ▁ ▁The ▁Governor , ▁concerned ▁to ▁avoid ▁a ▁possible ▁police ▁strike ▁or ▁even ▁re bell ion , ▁at ▁last ▁issued ▁a ▁p ardon , ▁prevent ing ▁arr ests ▁in ▁cases ▁committed ▁before ▁ 1 9 7 7 . ▁However , ▁the ▁p ardon ▁did ▁not ▁extend ▁to ▁higher - level ▁detect ive ▁super int end ents . ▁These ▁high - level ▁Chinese ▁officers , ▁famous ▁for ▁their ▁rich es , ▁left ▁for ▁ex ile ▁to ▁Taiwan , ▁which ▁had ▁no ▁extr ad ition ▁treat y ▁with ▁Hong ▁Kong . ▁In ▁time , ▁the ▁efforts ▁of ▁the ▁IC AC ▁changed ▁the ▁hab its ▁of ▁an ▁entire ▁population ▁and ▁turned ▁Hong ▁Kong ▁into ▁one ▁of ▁the ▁least ▁cor rupt ▁cities ▁in ▁the ▁world . ▁ ▁Polit ics ▁ ▁Def end ▁Dia oy ut ai ▁Islands ▁campaign s ▁In ▁ 1 9 7 0 , ▁the ▁American ▁government ▁returned ▁to ▁Japan ▁the ▁so vere ig nt y ▁of ▁Ry uky u ▁Islands ▁and ▁Dia oy ut ai ▁Islands ▁ ▁( known ▁as ▁the ▁Sen k aku ▁Islands ▁to ▁Japan ). ▁The ▁act ▁stir red ▁up ▁campaign s ▁for ▁def ending ▁the ▁Dia oy ut ai ▁Islands ▁among ▁Chinese ▁soci eties ▁all ▁around ▁the ▁world . ▁The ▁" H ong ▁Kong ▁Federation ▁of ▁Stud ents " ▁( 香 港 <0xE5> <0xB0> <0x88> 上 學 生 <0xE8> <0x81> <0xAF> 會 ) ▁requested ▁a ▁protest ▁at ▁Victoria ▁Park ▁in ▁C ause way ▁Bay ▁on ▁ 7