Simply put, out of pure malice, the union drove the target firm out of business through its legally privileged combinations in restraint of trade. These activities were declared legitimate because, and only because, they were carried out by a labor union. Hypocrisy replaced the rule of law. The Remedy One who understands the competitive market process knows that so long as combinations in restraint of trade are not supported by government, they are unlikely to be launched, and if launched they will quickly collapse when members cheat on one another and discover ways to compete not covered by the cartel agreements. The remedy for governmental hypocrisy in antitrust is not to apply antitrust regulations to unions.
Antitrust regulations are inconsistent with the principles of a free society.
They are not needed and they are never used to protect the process of competition. The last thing we need is for bad law to be applied equally. Depend on the open market process to maintain competition. Government's role is merely to enforce the rules of property, contract, and voluntary exchange. However, doing away with antitrust regulation is not enough.