ke ▁of ▁his ▁police ▁powers . ▁Due ▁to ▁the ▁IP RA ▁investigation ▁under way , ▁Mc Car thy ▁could ▁not ▁fire ▁the ▁officer , ▁nor ▁discipline ▁him ▁or ▁put ▁him ▁on ▁a ▁" no ▁pay " ▁status . ▁Mc Car thy ▁refused ▁to ▁res ign , ▁so ▁E manuel ▁fired ▁him . ▁ ▁C alls ▁for ▁An ita ▁Al vare z ' s ▁res ignation ▁Cook ▁County ▁State ' s ▁Att orney ▁An ita ▁Al vare z ▁was ▁critic ized ▁by ▁political ▁challeng ers ▁and ▁others ▁for ▁the ▁delay ▁in ▁the ▁release ▁of ▁the ▁dash - cam ▁video , ▁which ▁she ▁viewed ▁weeks ▁after ▁the ▁shooting , ▁and ▁the ▁long ▁wait ▁to ▁charge ▁Van ▁Dy ke ▁for ▁Mc Donald ' s ▁death . ▁This ▁took ▁more ▁than ▁a ▁year ▁and ▁was ▁completed ▁only ▁hours ▁before ▁the ▁court - ordered ▁release ▁of ▁the ▁video . ▁She ▁faced ▁a ▁difficult ▁primary ▁election ▁in ▁March ▁ 2 0 1 6 . ▁C alls ▁for ▁her ▁res ignation ▁came ▁from ▁within ▁her ▁own ▁party , ▁including ▁Cook ▁County ▁Board ▁President ▁T oni ▁Pre ck w ink le . ▁ ▁As ▁of ▁December ▁ 2 , ▁ 2 0 1 5 , ▁Al vare z ▁had ▁refused ▁to ▁res ign , ▁which ▁prompt ed ▁a ▁ 1 6 - hour ▁sit - in ▁by ▁protest ers ▁at ▁the ▁Cook ▁County ▁building ▁on ▁December ▁ 3 , ▁ 2 0 1 5 . ▁Al vare z ▁said ▁she ▁had ▁been ▁co oper ating ▁with ▁the ▁F BI ▁investigation ▁since