Prosecutors told jurors that Schnarr killed Aldridge, who was unarmed, in the middle of the day on a city street because the two had argued.
But Schnarr's defense attorney, Jeff Rosenzweig, argued that Aldridge nearly caused a collision with Schnarr's car, then chased Schnarr down to confront him.
Rosenzweig says he plans to appeal the conviction.
According to the Arkansas Democrat-Gazette, Schnarr must serve at least six months in prison before he's eligible for parole.
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