It was an immensely powerful idea. In the ten exciting years after its birth, the IWW became a threat to the capitalist class, exactly when capitalist growth was enormous and profits huge. The IWW never had more than five to ten thousand enrolled members at any one time- people came and went, and perhaps a hundred thousand were members at one time or another. But their energy, their persistence, their inspiration to others, their ability to mobilize thousands at one place, one time, made them an influence on the country far beyond their numbers. They traveled everywhere (many were unemployed or migrant workers); they organized, wrote, spoke, sang, spread their message and their spirit.

They were attacked with all the weapons the system could put together: the newspapers, the courts, the police, the army, mob violence. Local authorities passed laws to stop them from speaking; the IWW defied these laws. In Missoula, Montana, a lumber and mining area, hundreds of Wobblies arrived by boxcar after some had been prevented from speaking. They were arrested one after another until they clogged the jails and the courts, and finally forced the town to repeal its antispeech ordinance.