A Muskegon Heights mother is keeping her son's legacy alive after he was shot and killed in December of 2019, as local and federal prosecutors are partnering to address a rise in gun violence across Muskegon County this summer. WATCH: 'My best friend': Muskegon Heights mom honors son killed by gun violence as county works to reduce shootings Muskegon Heights mom honors son killed by gun violence as county works to reduce shootingsGary Phillips w…