ative ▁a ims ▁to ▁end ▁extreme ▁pover ty , ▁tack le ▁inequality ▁and ▁slow ▁down ▁climate ▁change ▁with ▁the ▁help ▁of ▁their ▁millions ▁of ▁fans . ▁It ▁is ▁part ▁of ▁the ▁wider ▁action / 2 0 1 5 ▁campaign , ▁a ▁global ▁citiz en ' s ▁movement ▁that ▁is ▁all ▁about ▁the ▁idea ▁that ▁ 2 0 1 5 ▁can ▁be ▁the ▁year ▁when ▁the ▁world ▁can ▁set ▁the ▁ag enda ▁to ▁end ▁major ▁global ▁issues . ▁One ▁D irection ▁will ▁be ▁asking ▁their ▁fans ▁to ▁describe ▁the ▁kind ▁of ▁world ▁they ▁want ▁to ▁live ▁in ▁by ▁sharing ▁powerful ▁pieces ▁of ▁cre ative ▁content , ▁including ▁videos ▁and ▁photos , ▁using ▁the ▁has ht ag ▁# Action 1 D . ▁The ▁quart et ▁also ▁star red ▁in ▁a ▁campaign ▁video , ▁appe aling ▁to ▁fans ▁to ▁join ▁the ▁movement . ▁ ▁Image ▁ ▁Neil ▁McC orm ick ▁of ▁The ▁Daily ▁Te legraph , ▁in ▁an ▁article ▁on ▁One ▁D irection ' s ▁success ▁in ▁North ▁America , ▁notes ▁that ▁Americans ▁had ▁left ▁a ▁gap ▁in ▁the ▁market ▁and ▁it ▁took ▁the ▁prom in ence ▁of ▁Justin ▁B ie ber ▁to ▁demonstrate ▁that ▁there ▁still ▁was ▁a ▁market ▁for ▁" clean ▁cut , ▁wh oles ome , ▁wh iter - than - white , ▁middle ▁class ▁parent ▁friendly ▁pop : ▁c ute ▁boys ▁advoc ating ▁pu ppy ▁love . ▁And ▁what ▁could ▁be ▁better ▁than ▁one ▁c ute ▁boy , ▁if ▁not ▁five ?" ▁One ▁D irection ▁have ▁been ▁described ▁as ▁spark ing ▁a