ors . ▁Some ▁demonstr ators ▁were ▁det ained ▁for ▁question ing . ▁The ▁Am n esty ▁International ▁report ▁on ▁the ▁human ▁rights ▁aspects ▁of ▁the ▁demonstr ations ▁is ▁published ▁here . ▁The ▁report ▁said , ▁ ▁The ▁protest s ▁were ▁for ▁the ▁most ▁part ▁peace ful ▁and ▁given ▁its ▁size ▁and ▁duration , ▁both ▁the ▁protest ers ▁and ▁the ▁police ▁showed ▁notable ▁organization ▁and ▁rest raint . ▁However , ▁there ▁were ▁sp or adic ▁inc idents ▁of ▁violence , ▁as ▁ri ot ▁police ▁and ▁protest ers ▁cl ashed . ▁The ▁two ▁main ▁flash points ▁of ▁violence ▁occurred ▁on ▁ 3 1 ▁May / 1 ▁June , ▁when ▁the ▁police ▁first ▁used ▁water ▁can n ons , ▁te ar ▁gas , ▁and ▁fire ▁ex ting u ish ers , ▁and ▁ 2 8 / 2 9 ▁June , ▁the ▁week end ▁following ▁the ▁government ' s ▁announ cement ▁that ▁US ▁be ef ▁imports ▁would ▁res ume . ▁The ▁decision ▁to ▁use ▁water ▁can n ons ▁and ▁fire ▁ex ting u ish ers ▁contributed ▁to ▁the ▁mass ▁res ignation ▁of ▁all ▁ 1 4 ▁members ▁of ▁the ▁Korean ▁National ▁Police ▁Agency ' s ▁human ▁rights ▁committee . ▁ ▁Other ▁forms ▁of ▁protest ▁ ▁Several ▁workers ’ ▁un ions ▁went ▁on ▁strike ▁to ▁show ▁their ▁opposition ▁to ▁the ▁be ef ▁import . ▁One ▁of ▁them ▁is ▁the ▁Korean ▁Metal ▁Work ers ’ ▁Union , ▁which ▁represents ▁workers ▁at ▁ 2 4 0 ▁companies , ▁including ▁the ▁country ’ s ▁four ▁major ▁autom akers . ▁On ▁July