The supremacy of this organization in the economic field of the labor movement exercises upon the American working class, eagerly though that class is seeking its own emancipation, an influence which, in the political field likewise, prevents it from organizing and fighting on proper lines. The baneful influence of the American Federation of Labor thus threatens to render nought the otherwise ripe material conditions, and to render abortive the impending Social Revolution. Whether the coming crisis in the life of this nation will result in the rearing of the Dome of Socialism and Industrial Democracy, or whether it will lead only to a most stupendous slaughter of the working class, to the erection of a “Caesar’s Column,” and to complete and hopeless subjugation of the masses depends largely on reorganization of the union movement from the craft union basis of the American Federation of Labor to a correct and sound industrial union basis. Unfortunately among the Socialists of America the vital importance of the educational work needed as a prerequisite for the reorganization of the labor union movement of the land is very little recognized. Only too frequently one meets Socialists who innocently assure themselves and others that they “believe in industrial unionism” and are “opposed to the A. F. of L.” merely because they try to hit back when Gompers attacks their party. The knowledge possessed by such Socialists as to the essential features of the A. F. of L. unionism, which makes of that organization a veritable trap that holds the working masses fast and helpless against the capitalist exploiters, is very indistinct. The literature, the press, the lectures, etc., that mold the views of such Socialists avoid, for sundry reasons, the dissecting and exposing of the dangerous features of craft unionism. As a rule, in the minds of such Socialists there is only a vague idea that “there is something wrong with the American Federation of Labor,” and they are mostly inclined to find that “wrong” in the opposition of the A. F. of L. leaders to the political work of the Socialists. Most of them are only too ready to forget and forgive the “mistakes” of that organization if it would only “leave the Socialists alone.” It is to stimulate the study of the essential and distinct features of A. F. of L. craft unionism, and as a contribution towards that study that this pamphlet is offered to the working class. BORIS REINSTEIN. MAY DAY AND LABOR DAY—A CONTRAST. The workers who are more or less familiar with the Labor and Socialist Movement in this country and especially in European countries, often wonder why most American workingmen celebrate “Labor Day” on the first Monday of September instead of May Day, on the first of May. We shall endeavor, in this pamphlet, to give a sketch of the difference in the character and effect of these two holidays of Labor.