Black Lives Matter (#ProtectedConcertedActivity).

Remember, even union-free employees are permitted to strike in an effort to improve their working conditions. Employers should keep in mind that the NLRB has approved strong appeals by unions to the class consciousness of minority employees. In one case, a union organizer remarked to employees that if African-American employees did not stick together and the union lost the election, all African-American employees would be fired. [Extracted from the article]