y ▁over ▁Iran ' s ▁invol vement ▁in ▁the ▁Rio + 2 0 ▁conference . ▁Iran ▁sent ▁a ▁deleg ation , ▁which ▁included ▁President ▁A hm ad ine j ad , ▁to ▁Rio ▁de ▁Janeiro ▁to ▁attend ▁the ▁sum mit . ▁The ▁controvers y ▁of ▁Iran ian ▁attend ance ▁at ▁the ▁sum mit ▁surr ounds ▁the ▁fact ▁that ▁Iran ▁has ▁serious ▁environmental ▁issues , ▁which ▁it ▁has ▁refused ▁to ▁address , ▁continu ing ▁human ▁rights ▁viol ations ▁and ▁is ▁ref using ▁to ▁co oper ate ▁with ▁the ▁I AE A ▁over ▁its ▁content ious ▁nuclear ▁program . ▁ ▁The ▁Iran ian ▁deleg ation ▁was ▁met ▁with ▁protest ers ▁who ▁w aved ▁b ann ers ▁with ▁the ▁s log an ▁“ A hm ad ine j ad ▁go ▁home ”. ▁The ▁demonstr ators ▁were ▁mostly ▁made ▁up ▁of ▁human ▁rights ▁activ ists , ▁hom osex uals ▁and ▁Jews ▁demonstr ating ▁against ▁Iran ' s ▁viol ation ▁of ▁human ▁rights ▁and ▁their ▁un resol ved ▁environment ▁issues . ▁Several ▁states ▁boy c otted ▁Iran ▁through ▁walking ▁out ▁during ▁A hm ad ine j ad ' s ▁speech , ▁including ▁Canada . ▁A ▁Canadian ▁representative ▁for ▁the ▁Environment ▁Minister ▁Peter ▁Kent , ▁who ▁led ▁the ▁deleg ation , ▁said ▁that ▁their ▁walk out ▁was ▁designed ▁to ▁"... send ▁a ▁strong ▁message ▁to ▁Iran , ▁and ▁to ▁the ▁world , ▁that ▁Canada ▁will ▁not ▁toler ate ▁Iran ' s ▁radical ▁and ▁dangerous ▁r het or ic ." ▁Other ▁deleg ations ▁including ▁the ▁United ▁States , ▁Israel ,