buenos air argentina revoke credentials activists accredit world trade organization wto attend ministerial meet take place buenos air next month foreign ministry civil society group say thursday 63 activists accreditations rescind largely affiliate world sale network say organizer deborah jam group oppose corporate globalization stag protest previous wto meet spokeswoman argentina foreign ministry tell reuters individuals allow attend determine disruptive constructive wto meet often attract protest anti-globalization group remain largely peaceful since riot break 1999 meet seattle never happen totally unprecedented jam also director international program left-leaning center economic policy research say telephone washington d.c. group post public letter include email wto send certain participants wednesday discourage travel argentina dec. 10-13 meet avoid turn away airport geneva-based wto immediately respond request comment normal business hours financial time thursday quote wto spokesman keith rockwell say wto ask argentine government reverse decision argentina president mauricio macri promote free-trade policies since take office december 2015 argentina host global events chair g20 group major economies next year protest coincide world economic forum event buenos air early year security force use water cannon tear gas control picketers block highway jam say unusual government agree host international gather deny entry people accredit host organization activists represent 20 different group include friends earth international global justice nearly 500 civil society group register jam say could tell members reject others say plan attend blacklist organizer argentina block activists attend wto meet