After the storm on the Stock Exchange, the syndicalists formed the Organization of the Unemployed (D.A.O.) which received great support. The syndicalists' struggle for the conditions and rights of the unemployed culminated in November 1918. The syndicalists had convened a protest meeting on 10 November at Grønttorvet, which gathered 50,000 participants, and again on 13 November, where 30,000-40,000 participated. The meeting on 13 November developed into violent clashes when the police attacked after the end of the meeting, and this was repeated on 14 November, when a large group of protesters gathered again on Grønttorvet. These events later became known as the "battles on Grønttorvet". In the years after the Storm on the Stock Exchange, the syndicalist movement gained growing support. Danish syndicalists were characterized by great optimism and a belief that the Russian Revolution had heralded the world revolution, whose realization was in full swing in Germany, Finland, Hungary and other European countries. On the domestic front, the syndicalist movement was successful and the syndicalist methods yielded visible results. The syndicalists played a not insignificant role in the many wildcat strikes that helped raise real wages, they had much of the credit for the 8-hour working day and experienced a breakthrough in relation to the principle of non-voting in the trade union movement (a struggle won by the syndicalists despite social democratic opposition). At this point, the movement was at its peak both in terms of membership numbers and influence. The Danish syndicalists, despite the movement's small membership, gained an influence that far exceeded what their size justified them to, and their ideas and fighting techniques reached far beyond their own membership. Thus syndicalism came to play a not insignificant role in the labor movement during the period of 1917 to 1921.