voters chicago oust embattle cook county state attorney anita alvarez harshly criticize handle police shoot investigation preliminary democratic primary result tuesday show alvarez 56 handily defeat kim foxx african-american capitalize criticism two-term prosecutor receive take year charge jason van dyke white officer fatally shoot black teenager 2014 stake race high foxx say victory speech understand excitement let us get lose gravity work ahead us foxx 43 face republican christopher pfannkuche run uncontested primary race general election november alvarez remain office kill black men hand mainly white law enforcement officials u.s. cities past two years prompt demonstrations across country stoke national debate race relations police tactics alvarez charge van dyke nov. 24 first-degree murder year shoot laquan mcdonald 16 time october 2014 shoot capture patrol car dashboard-camera videos release day van dyke charge set weeks protest politicians pastors civil right advocate call alvarez resign say file murder charge pressure videos make public find country cook county great climate change reform criminal justice system alvarez say concession speech van dyke charge police superintendent garry mccarthy fire u.s. justice department launch investigation chicago police department justice look like say organizers assata daughters local black women advocacy group facebook video post foxx serve assistant state attorney cook county 12 years chief staff cook county board president bear teenage mother spend part childhood chicago cabrini green public house complex homeless shelter kim life experience give deep understand impact crime violence poverty communities campaign website say embattle chicago prosecutor defeat election primary