▁anti - to b acco ▁campaign s ▁until ▁the ▁dem ise ▁of ▁their ▁regime ▁in ▁ 1 9 4 5 . ▁ ▁In ▁the ▁latter ▁part ▁of ▁the ▁ 2 0 th ▁century , ▁as ▁research ▁on ▁the ▁ris ks ▁of ▁second - hand ▁to b acco ▁smoke ▁became ▁public , ▁the ▁to b acco ▁industry ▁launched ▁" c our tes y ▁aw aren ess " ▁campaign s . ▁F ear ing ▁reduced ▁sales , ▁the ▁industry ▁created ▁a ▁media ▁and ▁legisl ative ▁programme ▁that ▁focused ▁upon ▁" ac com mod ation ". ▁Tol er ance ▁and ▁cour tes y ▁were ▁encourag ed ▁as ▁a ▁way ▁to ▁ease ▁height ened ▁t ensions ▁between ▁sm ok ers ▁and ▁those ▁around ▁them , ▁while ▁avoid ing ▁sm oking ▁b ans . ▁In ▁the ▁US , ▁states ▁were ▁encourag ed ▁to ▁pass ▁laws ▁providing ▁separate ▁sm oking ▁sections . ▁ ▁In ▁ 1 9 7 5 ▁the ▁U . S . ▁state ▁of ▁Minnesota ▁en act ed ▁the ▁Minnesota ▁C lean ▁Ind oor ▁Air ▁Act , ▁making ▁it ▁the ▁first ▁state ▁to ▁restrict ▁sm oking ▁in ▁most ▁public ▁spaces . ▁At ▁first ▁restaur ants ▁were ▁required ▁to ▁have ▁" No ▁Sm oking " ▁sections , ▁and ▁bars ▁were ▁ex empt ▁from ▁the ▁Act . ▁As ▁of ▁ 1 ▁October ▁ 2 0 0 7 ▁Minnesota ▁en act ed ▁a ▁ban ▁on ▁sm oking ▁in ▁all ▁restaur ants ▁and ▁bars ▁state wide , ▁called ▁the ▁Fre edom ▁to ▁Bre at he ▁Act ▁of ▁ 2 0 0