▁A zn ar ▁Clement e , ▁ 1 7 , ▁Rom ual do ▁Bar ro so ▁Chap ar ro , ▁ 1 9 , ▁and ▁José ▁Cast illo , ▁ 3 2 , ▁were ▁shot ▁dead . ▁Bien ven ido ▁Per eda ▁died ▁later ▁on . ▁H undred s ▁more ▁were ▁injured , ▁many ▁with ▁gun shot ▁w ounds . ▁ ▁That ▁same ▁week ▁Manuel ▁F rag a ▁I rib ar ne ▁then ▁Home ▁Minister ▁and ▁founder ▁of ▁the ▁Spanish ▁Conserv ative ▁Party , ▁Rod ol fo ▁Martín ▁Villa , ▁Minister ▁of ▁Un ions ▁and ▁General ▁Camp ano , ▁director ▁of ▁the ▁Civil ▁Guard , ▁visited ▁some ▁of ▁the ▁injured ▁workers ▁in ▁an ▁effort ▁to ▁minim ize ▁criticism . ▁The ▁leader ▁of ▁the ▁German ▁social - dem ocr ats , ▁the ▁SP D , ▁cancel led ▁a ▁meeting ▁with ▁F rag a ▁that ▁same ▁week . ▁ ▁Con sequ ences ▁ ▁Those ▁inc idents ▁fue led ▁the ▁action ▁of ▁the ▁dem ocr atic ▁opposition ▁and ▁their ▁coord ination . ▁The ▁Democratic ▁Jun ta ▁of ▁Spain ▁and ▁the ▁Platform ▁of ▁Con ver gence ▁merged ▁into ▁the ▁Democratic ▁Co ord ination ▁or ▁Pl ata j unta ▁on ▁ 2 6 ▁of ▁March . ▁This ▁new ▁board ▁ex ert ed ▁more ▁political ▁pressure ▁on ▁the ▁government , ▁demand ing ▁am n esty , ▁freedom ▁for ▁un ions , ▁dem ocracy ▁and ▁den oun cing ▁cos met ic ▁re forms . ▁Manuel ▁F rag a ▁I rib ar ne ▁and ▁Martín ▁Villa ▁are ▁considered ▁responsible ▁for ▁the