. ▁ ▁References ▁▁▁▁▁▁ ▁Category : N ations ▁at ▁the ▁ 1 9 2 0 ▁Summer ▁Olympics ▁ 1 9 2 0 ▁Olympics <0x0A> </s> ▁Psych ed el ic ▁rock ▁in ▁Latin ▁America ▁is ▁the ▁psych ed el ic ▁rock ▁music ▁scene ▁in ▁Latin ▁America . ▁ ▁Over view ▁ ▁Brazil ▁and ▁the ▁Trop ical ia ▁movement ▁▁ ▁Latin ▁America ▁proved ▁a ▁particularly ▁fert ile ▁ground ▁for ▁psych ed el ic ▁rock . ▁The ▁Brazil ian ▁psych ed el ic ▁rock ▁group ▁Os ▁Mut antes ▁formed ▁in ▁ 1 9 6 6 , ▁although ▁little ▁known ▁outside ▁Brazil ▁at ▁the ▁time ▁( due ▁to ▁the ▁fact ▁that ▁they ▁recorded ▁in ▁Portuguese ), ▁they ▁have ▁since ▁acc ru ed ▁a ▁substantial ▁international ▁cult ▁following . ▁Os ▁Mut antes ▁also ▁played ▁a ▁central ▁role ▁in ▁the ▁short - l ived ▁but ▁revolution ary ▁Brazil ian ▁a est h etic ▁movement ▁Trop ic ál ia , ▁also ▁known ▁as ▁' T rop ical ismo ' ▁( T rop ical ism ), ▁an ▁anti - author itar ian ▁art istic ▁reaction ▁to ▁the ▁repr ess ive ▁military ▁jun ta ▁that ▁seized ▁power ▁in ▁Brazil ▁in ▁ 1 9 6 4 . ▁En comp ass ing ▁visual ▁art , ▁theatre , ▁poetry ▁and ▁music , ▁Trop ic ál ia ▁combined ▁the ▁popular ▁and ▁the ▁avant - gar de , ▁and ▁f used ▁traditional ▁Brazil ian ▁culture ▁with ▁foreign ▁influ ences , ▁including ▁contemporary ▁develop ments ▁in ▁British ▁and ▁American ▁psych ed el ic ▁music , ▁and ▁above ▁all