Paul Callan : Ferguson protests certain if grand jury fails to indict Officer Darren Wilson . Callan : Protesters might want to skip grand jury process , but it 's essential . Callan : Protests are not just about the police killing of Michael Brown ; they also have a lot to do with racial tensions in America and how that plays out on the streets. He says change comes through voting rather than in street demonstrations .
Paul Callan : Ferguson protests certain if grand jury fails to indict Officer Darren Wilson . Callan : Protesters might want to skip grand jury process , but it 's essential . Callan : It 's better that a citizens ' panel handle this explosive case than a single judge . He says change comes through voting rather than in street demonstrations .