George Zimmerman, the Florida man who shot and killed unarmed teenager Trayvon Martin, is suing NBC for defamation, claiming that the network edited one of his phone calls to police “to create the myth” that he is racist.

Zimmerman, a neighborhood watch volunteer, observed Martin walking through a gated community in Sanford, Fl. on the night of Feb. 26. Believing the 17-year-old's behavior to be suspicious, Zimmerman followed him while on the phone with police. At some point after the call ended, a struggle ensued, and Zimmerman fatally shot Martin once in the chest at close range. The 28-year-old claims that he fired in self-defense after Martin attacked him.

While reporting on the case, NBC's “Today” show aired an edited clip of Zimmerman's call to police, in which it appears that Zimmerman told police, without prompting, that Martin was black. In reality, Zimmerman mentioned the teen's race in response to a dispatcher's question.