Law, Business, and Society 9th Edition by Tony McAdams

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George A. Hormel Co. and the United Food and Commercial Workers Union settled a long labor dispute. Thereafter, an unhappy employee drove his car in a parade and attended a rally, both of which were designed to encourage a nationwide boycott of Hormel Products. The employee did nothing to signal his feelings beyond his presence at the two events.
Employees may lawfully be dismissed for disloyalty to their employer. Supporting a boycott of an employer's products ordinarily constitutes disloyalty except where (1) the boycott is related to an ongoing labor dispute and (2) the support does not amount to disparagement of the employer's product.
Was this Hormel employee engaged in protected activity such that his dismissal was unlawful Explain. See George A. Hormel and Company v. National Labor Relations Board, 962 F.2d 1061 (D.C. Cir. 1992).