▁He ▁served ▁as ▁police ▁chief ▁from ▁ 1 9 9 8 - 2 0 0 1 ▁under ▁Dennis ▁Arch er . ▁In ▁ 2 0 0 4 ▁he ▁was ▁made ▁Ass istant ▁Wayne ▁County ▁Executive , ▁and ▁in ▁ 2 0 0 9 ▁he ▁became ▁Wayne ▁County ▁Sher iff . ▁ ▁Political ▁career ▁In ▁ 2 0 1 2 , ▁Brian ▁B anks ▁f als ely ▁claimed ▁to ▁be ▁an ▁att orney , ▁leading ▁Napoleon ▁to ▁end or se ▁him . ▁Napoleon ' s ▁sp okes man ▁Dennis ▁Niem iec ▁said ▁the ▁Napoleon ▁was ▁una ware ▁of ▁B anks ’ ▁fel ony ▁conv ict ions ▁and ▁Napoleon ▁said ▁he ▁did ▁not ▁previously ▁know ▁about ▁B anks ' ▁fel on ies . ▁▁ 2 0 1 3 ▁Detroit ▁May oral ▁election ▁ ▁A ▁Dem ocrat , ▁Napoleon ▁entered ▁Detroit ▁politics ▁in ▁ 2 0 1 3 , ▁announ cing ▁his ▁intent ions ▁to ▁run ▁for ▁mayor ▁in ▁the ▁city ' s ▁non - part isan ▁primary ▁to ▁replace ▁Dave ▁B ing , ▁who ▁announced ▁he ▁would ▁not ▁seek ▁re - e lection ▁after ▁the ▁appointment ▁of ▁an ▁emer gency ▁manager ▁for ▁the ▁city . ▁ ▁During ▁the ▁primary ▁campaign , ▁he ▁referred ▁to ▁himself ▁as ▁a ▁" bus iness man ▁with ▁a ▁bad ge " ▁. ▁ ▁Napoleon ▁placed ▁second ▁in ▁the ▁primary ▁despite ▁his ▁most ▁serious ▁competition , ▁former ▁Wayne ▁County ▁Pro sec utor ▁and ▁Detroit ▁Medical ▁Center ▁CE O ▁Mike ▁D ug gan ▁having ▁to ▁run ▁as ▁a ▁write - in ▁candidate