 Grass Curtain yaive magazini yekota yezvematongerwo enyika yeSouth Sudan uye zviitiko zvazvino zvakaburitswa neSouth Sudan Association muLondon pakati pa1970 na1972. Enoch Mading de Garang ndiye aitungamirira uye ndiye aiva mupepeti mukuru wepepanhau racho. Grass Curtain yaive yakabatana zvakanyanya neSouthern Sudan Liberation Movement SSLM, ruoko rwezvematongerwo enyika rweAnya-Nya, muunganidzwa weSouthern Sudanese separatist mafambiro akaumbwa panguva yeFirst Sudanese Civil War. Magazini yacho yakabudiswa zvikuru kuti iwane rutsigiro rwakakura nokuda kwechinangwa cheSouth Sudanese. 