▁- ▁they ▁were ▁held ▁in ▁prison ▁for ▁three ▁months ▁without ▁charge ▁or ▁trial , ▁and ▁after ▁a ▁further ▁four ▁months ▁under ▁house ▁arrest , ▁they ▁were ▁released ▁on ▁condition ▁that ▁they ▁leave ▁the ▁country , ▁and ▁they ▁spent ▁the ▁next ▁few ▁years ▁in ▁ex ile ▁in ▁the ▁UK . ▁O thers ▁in ▁the ▁Trop ical ist ▁movement ▁were ▁treated ▁even ▁more ▁har sh ly ▁- ▁several ▁were ▁arrested ▁and ▁tort ured , ▁or ▁forced ▁to ▁under go ▁psych iat ric ▁' tre at ment '. ▁ ▁Mexico , ▁Chile ▁and ▁Argentina ▁▁ ▁In ▁the ▁late ▁ 1 9 6 0 s , ▁a ▁wave ▁of ▁Mexican ▁rock , ▁heavily ▁influenced ▁by ▁psych ed elia ▁and ▁fun k ▁emer ged , ▁especially ▁in ▁northern ▁border ▁Mexican ▁states , ▁in ▁particular , ▁T iju ana , ▁B aja ▁California . ▁Among ▁the ▁most ▁recognized ▁bands ▁from ▁this ▁" Ch icano ▁W ave " ▁( O nd a ▁Ch icana ▁in ▁Spanish ) ▁were ▁Three ▁Sou ls ▁in ▁my ▁Mind , ▁Love ▁Army , ▁El ▁R it ual ▁and ▁Los ▁D ug ▁D ug ' s . ▁The ▁Festival ▁Rock ▁y ▁R ued as ▁de ▁Av ánd aro ▁was ▁a ▁historic ▁Mexican ▁rock ▁festival ▁held ▁on ▁September ▁ 1 1 – 1 2 , ▁ 1 9 7 1 , ▁on ▁the ▁sh ores ▁of ▁Lake ▁Av ánd aro ▁near ▁the ▁Av ánd aro ▁G olf ▁Club , ▁in ▁the ▁central ▁State ▁of ▁Mexico . ▁The ▁festival , ▁took ▁place ▁at ▁the ▁height ▁of ▁La ▁O