Zimmerman was not trained to take someone on that would resist his "authority" and he should have realized that.Discretion is the better part of valor.Why put yourself in harms way when there is no need to as there is no actual violence/crime in progress? Feeling justified in accosting someone verbally because they are on your turf is guaranteed to get you in trouble. Zimmerman might have won the battle but the war is far from over for him,legally speaking.