[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2011/images/08/30/costello_vert.jpg width=200 height=230 align="right"] From CNN's Carol Costello: Last month, labor activists in Wisconsin successfully recalled two anti-union state lawmakers after Governor Scott Walker took on public unions and effectively killed collective bargaining earlier in the year. Labor union leaders who contend that a war is being waged against hard-working Americans by anti-union lawmakers, … Continue reading Talk Back: Do unions help or hurt America?