 Recording sessions for The Joshua Tree began in January 1986 in Danesmoate House in Dublin , Ireland , and continued throughout the year . U2 briefly interrupted these sessions in June to join Amnesty International 's A Conspiracy of Hope tour . Following the first concert in San Francisco , lead singer Bono met René Castro , a Chilean mural artist . Castro had been tortured and held in a concentration camp for two years by the dictatorial Chilean government because his artwork criticised the Pinochet @-@ led regime that seized power in 1973 during a coup d 'état . Castro showed Bono a wall painting in the Mission District that depicted the ongoing plight in Chile and Argentina . He also learned of the Madres de Plaza de Mayo , a group of women whose children were forcibly disappeared by the Argentine government . The Madres ' children were students who had opposed the government during the Dirty War , and the coup d 'état that brought Jorge Rafael Videla into power . The Madres joined together to campaign for information regarding the locations of their children 's bodies and the circumstances of their deaths , believing them to have been kidnapped , tortured , and murdered . 
 Recording sessions for The Joshua Tree began in January 1986 in Danesmoate House in Dublin , Ireland , and continued throughout the year . U2 briefly interrupted these sessions in June to join Amnesty International <a href='null_genetive' title='1'><mark>'s</mark></a>A Conspiracy of Hope tour . Following the first concert in San Francisco , lead singer Bono met René Castro , a Chilean mural artist . Castro <a href='been_done' title='2'><mark>had</mark></a> been tortured and held in a concentration camp for two years by the dictatorial Chilean government because his artwork criticised the Pinochet @-@ led regime <a href='null_relcl' title='3'><mark>that</mark></a>seized power in 1973 during a coup d <a href='null_genetive' title='4'><mark>'</mark></a>tat . Castro showed Bono a wall painting in the Mission District <a href='null_relcl' title='5'><mark>that</mark></a>depicted the ongoing plight in Chile and Argentina . He also learned of the Madres de Plaza de Mayo , a group of women whose children <a href='uninflect' title='6'><mark>were</mark></a> forcibly disappeared by the Argentine government . The Madres <a href='null_genetive' title='7'><mark>'</mark></a>children <a href='uninflect' title='8'><mark>were</mark></a> students <a href='null_relcl' title='9'><mark>who</mark></a><a href='been_done' title='10'><mark>had</mark></a> opposed the government during the Dirty War , and the coup d <a href='null_genetive' title='11'><mark>'</mark></a>tat <a href='null_relcl' title='12'><mark>that</mark></a>brought Jorge Rafael Videla into power . The Madres joined together to campaign for information regarding the locations of their children <a href='null_genetive' title='13'><mark>'s</mark></a>bodies and the circumstances of their deaths , believing them to <a href='been_done' title='14'><mark>have</mark></a> been kidnapped , tortured , and murdered . 
Recording sessions fir The Joshua Tree began in January 1986 in Danesmoate House in Dublin , Ireland , and continued throughout the year . U2 briefly interrupted these sessions in June to join Amnesty International  A Conspiracy of Hope tour . Following da first concert in San Francisco , lead singer Bono met René Castro , a Chilean mural artist . Castro done been tortured and held in a concentration camp for 2 years by the dictatorial Chilean government because his artwork criticised the Pinochet @-@ led regime seized power in 1973 during a coup d  tat . Castro showed Bono a wall painting in the Mission District depicted the ongoing plight in Chile and Argentina . He also learned of tdaMadres de Plaza de Mayo , a group of women whose children was forcibly disappeared by the Argentine government . The Madres  children was students done opposed thdaovernment during thedarty War , and the coup d  tat brought Jorge Rafael Videla into power . The Madres joined together to campaign for information regarding the locations of their children  bodies and the dacumstances of their deaths , believing em to done been kidnapped , tortured , and murdered .