It is manifest that not much progress is made by such general statements as those quoted above from Allen v. Flood, whatever may be their meaning.

Still standing for solution is the question, Under what circumstances, including the motive of the actor, is the act complained of lawful, and to what extent?

In cases somewhat akin to the one at bar this court has had occasion to consider the question how far acts, manifestly coercive and intimidating in their nature, which cause damage and injury to the business or property of another, and are done with intent to cause such injury and partly in reliance upon such coercion, are justifiable.

In Bowen v. Matheson, 14 Allen, 499, it was held to be lawful for persons engaged in the business of shipping seamen to combine together into a society for the purpose of competing with other persons engaged in the same business, and it was held lawful for them, in pursuance of that purpose, to take men out of a ship, if men shipped by a non-member were in that ship; to refuse to furnish seamen through a non-member; to notify the public that they had combined against non-members, and had “laid the plaintiff on the shelf”; to notify the plaintiff’s customers and friends that the plaintiff could not ship seamen for them; and to interfere in all these ways with the business of the plaintiff as a shipping agent, and compel him to abandon the same. The justification for these acts, so injurious to the business of the plaintiff and so intimidating in their nature, is to be found in the law of competition. No legal right of the plaintiff was infringed upon, and, as stated by Chapman, J., in giving the opinion of the court (p. 503), “if their effect is to destroy the business of shipping-masters who are not members of the association, it is such a result as in the competition of business often follows from a course of proceeding that the law permits.” The primary object of the defendants was to build up their own business, and this they might lawfully do to the extent disclosed in that case, even to the injury of their rivals.

Similar decisions have been made in other courts where acts somewhat coercive in their nature and effect have been held justifiable under the law of competition. Mogul Steamship Co. v. McGregor, [1892] A. C. 25; Bohn Manuf. Co. v. Hollis, 54 Minn. 223; Macauley v. Tierney, 19 R. I. 255.

On the other hand, it was held in Carew v. Rutherford, 106 Mass. 1, that a conspiracy against a mechanic,—who is under the necessity of employing workmen in order to carry on his business,—to obtain a sum of money from him which he is under no legal obligation to pay, by inducing his workmen to leave him or by deterring others from entering into his employ, or by threatening to do this so that he is induced to pay the money demanded, under a reasonable apprehension that he cannot carry on his business without yielding to the demands, is an illegal, if not a criminal conspiracy; that the acts done under it are illegal, and that the money thus obtained may be recovered back. Chapman, C. J., speaking for the court, says that there is no doubt that, if the parties under such circumstances succeed in injuring the business of the mechanic, they are liable to pay all the damages done to him.

That case bears a close analogy to the one at bar. The acts there threatened were like those in this case, and the purpose was, in substance, to force the plaintiff to give his work to the defendants, and to extort from him a fine because he had given some of his work to other persons.

Without now indicating to what extent workmen may combine and in pursuance of an agreement may act by means of strikes and boycotts to get the hours of labor reduced or their wages increased, or to procure from their employers any other concession directly and immediately affecting their own interests, or to help themselves in competition with their fellow-workmen, we think this case must be governed by the principles laid down in Carew v. Rutherford, ubi supra. The purpose of these defendants was to force the plaintiffs to join the defendant association, and to that end they injured the plaintiffs in their business, and molested and disturbed them in their efforts to work at their trade. It is true they committed no acts of personal violence, or of physical injury to property, although they threatened to do something which might reasonably be expected to lead to such results. In their threat, however, there was plainly that which was coercive in its effect upon the will. It is not necessary that the liberty of the body should be restrained. Restraint of the mind, provided it would be such as would be likely to force a man against his will to grant the thing demanded, and actually has that effect, is sufficient in cases like this. As stated by Lord Bramwell in Regina v. Druitt, 10 Cox C. C. 592, 600, “No right of property, or capital, ... was so sacred, or so carefully guarded by the law of this land, as that of personal liberty.... That liberty was not liberty of the body only. It was also a liberty of the mind and will; and the liberty of a man’s mind and will, to say how he should bestow himself and his means, his talents, and his industry, was as much a subject of the law’s protection as was that of his body.”

It was not the intention of the defendants to give fairly to the employer the option to employ them or the plaintiffs, but to compel the latter against their will to join the association, and to that end to molest and interfere with them in their efforts to procure work by acts and threats well calculated by their coercive and intimidating nature to overcome the will.

The defendants might make such lawful rules as they please for the regulation of their own conduct, but they had no right to force other persons to join them.