The news of 17-year-old Trayvon Martin’s shooting death has sparked nationwide headlines, with many mourning the death of the unarmed Florida teen. But others have responded with racist sentiments.

The NAACP Anchorage, Alaska, Unit #1000 rallies for justice for slain Florida teen Trayvon Martin. (Bob Hallinen/AP)

Michigan State Police and Michigan Department of Transportation officials told The Grio they are trying to determine who changed the sign. The sign is attached to a trailer that allows anyone to change the message with the right passwords.

This is the second racially charged incident involving a digital highway sign in Michigan. The first was on April 8, 2011 when someone wrote “God hates n-word”on another road sign near Eastern Michigan University.

The teen was shot and killed in Florida by neighborhood watch volunteer George Zimmerman, who claimed he shot Martin in self-defense. Zimmerman has yet to be charged with any crime. While many have called for his arrest, he has supporters. At Ohio State University, for instance, someone spray painted “Long Live Zimmerman” at the campus’ Hale Black Cultural Center.

Meanwhile, supporters of the Martin family continue to hold rallies and vigils nationwide, including one Sunday night organized by students at Florida A&M University.

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