M IR ), ▁plus ▁fa ctions ▁of ▁the ▁Christian ▁Left ▁and ▁the ▁Popular ▁Unit ary ▁Action ▁Mov ement ▁( MA PU ). ▁Its ▁first ▁president ▁was ▁the ▁social ist ▁Manuel ▁Al me y da . ▁ ▁The ▁reason ▁for ▁its ▁creation ▁was ▁to ▁organ ize ▁the ▁left ist ▁opposition ▁to ▁the ▁military ▁dict ator ship . ▁The ▁M DP ▁led ▁the ▁so - called ▁" J orn adas ▁de ▁Protest a ▁Nacional " ▁driven ▁by ▁opposition ▁to ▁the ▁military ▁dict ator ship ▁of ▁General ▁August o ▁P ino ch et , ▁while ▁act ively ▁involved ▁in ▁the ▁reconst ruction ▁of ▁the ▁social ▁movements ▁of ▁people , ▁students ▁and ▁workers . ▁Since ▁its ▁in ception , ▁the ▁M DP ▁showed ▁himself ▁a ▁sta unch ▁oppon ent ▁of ▁the ▁regime ▁and ▁demanded ▁its ▁immediate ▁end ▁and ▁a ▁general ▁agreement ▁with ▁the ▁Democratic ▁Alliance ▁to ▁establish ▁a ▁prov is ional ▁government ▁without ▁exclus ions . ▁ ▁In ▁August ▁ 1 9 8 4 , ▁polit icians , ▁law y ers , ▁business men ▁and ▁civ ili ans ▁who ▁supported ▁the ▁military ▁regime , ▁including ▁Ja ime ▁Gu zm án ▁and ▁Pablo ▁Long ue ira , ▁required ▁the ▁Constitution al ▁Court ▁of ▁Chile , ▁which ▁declared ▁the ▁un const itution ality ▁of ▁this ▁movement . ▁Despite ▁the ▁r uling , ▁the ▁M DP ▁continued ▁subs isting ▁in ▁semi - cl and est ine . ▁ ▁The ▁M DP ▁self - d iss ol ved ▁in ▁June ▁ 1 9 8 7 ▁to ▁create ▁a ▁new ▁left ist