This section is from the book "The Law Of Contracts", by William Herbert Page. Also available from Amazon: Commercial Contracts: A Practical Guide to Deals, Contracts, Agreements and Promises.
If violence or coercion exist or are threatened, different principles apply from those which apply in cases of peaceful persuasion. The use of coercion is very generally held to be illegal, and relief will be given to the party who is injured thereby.1 An injunction will be given against strikers who use violence to prevent other workmen from taking their places with their former employer.2
The test for the existence of coercion is said to be the intention of the persons or the association who are claimed to have exerted the coercion,3 and not the effect on the mind upon whom such coercion is alleged to have been exerted.4.