▁built ▁a ▁mechanical ▁dog ▁that ▁ch ases ▁the ▁cat ▁out ▁of ▁the ▁house . ▁ ▁Before ▁he ▁leaves ▁though ▁a ▁mouse ▁sk ins ▁the ▁cat ▁with ▁an ▁electric ▁raz or , ▁but ▁leaves ▁three ▁short ▁d ots ▁and ▁a ▁long ▁stre ak ▁of ▁fur ▁on ▁his ▁back . ▁ ▁In ▁Mor se ▁code , ▁the ▁letter ▁" V " ▁is ▁produced ▁through ▁dot - dot - dot - dash . ▁ ▁As ▁dep icted ▁in ▁many ▁pictures ▁but ▁made ▁popular ▁by ▁W inst on ▁Church ill , ▁the ▁“ V ” ▁for ▁victory ▁sign ▁was ▁a ▁popular ▁symbol ▁of ▁encourag ement ▁for ▁the ▁Al lies . ▁ ▁The ▁cart oon ▁ends ▁with ▁the ▁m ice ▁singing , ▁“ We ▁did ▁it ▁before , ▁we ▁did ▁it ▁A GA IN !” ▁ ▁Der ▁Fue hrer ' s ▁Face ▁is ▁one ▁of ▁the ▁most ▁popular ▁propag anda ▁cart o ons ▁produced ▁by ▁W alt ▁Disney . ▁ ▁In ▁Harold ▁D . ▁L ass well ' s ▁Pro pag anda ▁Te chni que ▁in ▁World ▁War ▁I , ▁he ▁states ▁“ It ▁is ▁always ▁difficult ▁for ▁many ▁simple ▁minds ▁inside ▁a ▁nation ▁to ▁attach ▁personal ▁tra its ▁to ▁so ▁dispers ed ▁an ▁entity ▁as ▁a ▁whole ▁nation . ▁ ▁They ▁need ▁to ▁hate ▁some ▁individual ▁on ▁whom ▁to ▁pin ▁their ▁hate . ▁ ▁It ▁is , ▁therefore , ▁important ▁to ▁single ▁out ▁a ▁hand ful ▁of ▁enemy ▁leaders ▁and ▁load ▁them ▁down ▁with ▁the ▁whole ▁Dec alog ue ▁of ▁s ins .” ▁ ▁In ▁World ▁War