White on Black violence, esp. when perpetrated on black youth, is especially enticing to media outlets. Big ratings, big talking points, and it gives opportunities for so-called civil rights leaders such as the NAACP, Urban League, RAINBOW/PUSH Coalition, The Reverends, National Black Caucus, megachurch pastors, etc(all of whom's leaders are multi-millionaires, btw) a chance to rear their ugly heads on cable news networks decrying the violence against black youths. High incarceration rates, broken families, and ignorance ensure these charlatans stay in business by ensuring their constituents are kept in the dirt.
George Zimmerman's ethnicity was a central topic throughout the case. One of the top Google searches asks if Zimmerman was Jewish. The Hispanic advocacy group(LOL) LaRaza were quick to reject him, stating that he wasn't one of "theirs." The media in general referred to him as a "White Hispanic", a term that outside of census and demographic topics, is very rarely used especially when describing an individual.