Illinois Attorney General Kwame Raoul and Special Prosecutor Joe McMahon are challenging Jason Van Dyke’s prison sentence. The challenge is against Cook County Judge Vincent Gaughan’s decision to hand down a prison term against the former Chicago cop for second-degree murder and not aggravated battery. Raoul doesn’t believe the law was followed by Judge Gaughan. Less than a month ago, Van Dyke received a sentence of six years and nine months in prison for the deadly 2014 shooting of black teen Laquan McDonald. The decision angered activists, who expected a stiffer punishment after a jury last year found the defendant guilty of second-degree murder and 16-counts of aggravated battery.