Moreover, private employers in most states and in most circumstances employ their employees at will, meaning the employers’ management decisions cannot be challenged [this is terrible] unless those decisions discriminate against an employee because of the employee’s age, gender or other protected characteristic. Suddenly, however, the discretion private employers have enjoyed is diminishing. As Lafe E. Solomon, acting general counsel for the National Labor Relations Board, explained in a report released on Aug. 18, the NLRB now maintains that the National Labor Relations Act protects some employee social-media activity. As a result, private employees now have more freedom of speech...