4. _The strike is a threat and a mode of attack to enforce the demands of the union._ To most newly organized laborers the union appeals mainly as an instrument for striking, for threatening the employer or for making him suffer. When a new union is formed, it is nearly always dedicated by a strike, which is the simultaneous stopping of work by a number of workers. A strike is intended to force the employer to grant the wages and conditions demanded. Its effectiveness lies in the injury which it occasions or threatens in the stopping of machinery, the ruin of material, the loss of custom, and the failure to complete contracts undertaken. Its success being dependent on the inability of the employer to fill the places of the strikers, their energies are bent on persuading or coercing other workers from taking employment. There are many ways of coercing workers without personal violence. Public opinion does much, and probably the severest of all coercive measures is the social ostracism of the worker. What may be called the endless-chain boycott is an excommunication, without measure or limit, of the non-union worker and of every one in any way befriending him or the employer. So far as in their power lies, the enraged strikers dissolve the very bonds of society, brother casts off brother, and mother disowns son. The unhappy conditions in the coal regions in 1902 rivaled the tragedies of civil war. A reasonable use of the boycott, refusal to maintain social relations with the person who offends one, is doubtless a part of personal liberty; but the boycott, as experience shows, has moral limits, and it should have strict legal limits. Its use beyond the moderate limit of the first degree of personal relations is antisocial to the degree of criminality, whether it be used as the weapon of organized workers or of organized wealth. [Sidenote: Violence in strikes is mob law] When peaceable means fail, often there is a recourse to violence both against the employer and his property and against the non-union men. The evils of violence in strikes often are tardily recognized by the public, whose sympathy up to a certain point is with the striker as "the under dog." It is slow to realize that strike violence is mob-law. Whenever men of one group assume the right to coerce forcibly and to wreak their hatred against one of their fellow-workers, it is a blow at political liberty. No free society can safely go the first step in permitting one group of men to usurp control over others in this way. [Sidenote: Costliness of strikes]