It will be remembered that the great railroad strikes of that year extended over many of the northern roads but caused most trouble in Martinsburg, West Virginia, Pittsburg and other railway centers. Much property was destroyed, lives were lost, and the strikers failed to obtain their ends.[3] Other effects of the controversy, moreover, made it an important landmark in the history of the labor question. The inconvenience and suffering which the strike caused in cities far distant from the scene of actual conflict indicated that the transportation system was already so essential a factor in welding the country together that any interruption to its operation had become intolerable. The hostility of some of the railway managers to union among their laborers and the rumors that they were determined to crush such organizations augured ill for the future. The hordes of unemployed workmen and the swarms of tramps which had resulted from the continued industrial depression of 1873 insured rioting and violence during the strike, whether the strikers themselves favored it and shared in it or not. The destruction of property which resulted from the strike caused many state legislatures to pass conspiracy laws directed against labor; more attention was paid to the need of trained soldiers for putting down strikes, and the construction of many armories followed; and the courts took a more hostile attitude toward labor unions. Equally important was the effect on the workmen themselves. When the strike became violent and the state militia failed to check it, the strikers found themselves face to face with federal troops. President Hayes could not, of course, refuse to repress the rioters; nevertheless his action aligned the power of the central government against the strikers, and seemed to the latter to align the government against the laborers as a class. Of a sudden, then, the labor problem took on a new and vital interest; workingmen's parties "began to spring up like mushrooms"; and the laboring men saw more clearly than ever the essential unity of their interests. Industrial unrest increased rather than diminished during the prosperous eighties; for the first five years of the decade, strikes and lockouts together averaged somewhat over five hundred annually. The climax came in "the great upheaval" of 1884 to 1886.[4] In the latter year nearly 1600 controversies involved 610,024 men and a financial sacrifice estimated at $34,000,000. Early in May, 1886, occurred the memorable Haymarket affair in the city of Chicago. The city was a center of labor agitation, some of it peaceful, some of it in the hands of radical European anarchists whose methods were shown in a statement of one of their newspapers, _The Alarm_, on February 21, 1885: