I think the union leader must not have appaered in the T shirt, if she had talked on the TV in the capacity of the union leader of the said company. I don't think she represented the collective decison of the members on this contraversial political issue. (They joined the portest when the union leader was sacked, but it did not mean they supported her political stance on the LM issue.) So strictly speaking, she used the union's name for her own political agenda without getting consent from its members. If she had a better understanding about the role of union leaders, she would have been more careful of her action. Her action caused an unecessary frictions (which had nothing to do with labor issues) between the employees and the workers, and became a reason that the management made the decision, I guess.