The hammer and sickle are a part of communist symbolism and their usage indicates an association with communism, a communist party, or a communist state. This symbol features a hammer and a sickle overlapping each other. The two tools are symbols of the industrial proletariat and the peasantry; placing them together symbolizes the unity between industrial and agricultural workers. This emblem was conceived during the Bolshevik Revolution. It is best known from having been incorporated into the red flag of the Soviet Union, along with the red star. It has also been used in other flags and emblems. The Coat of Arms of the Soviet Union and the Coats of Arms of the Soviet Republics showed the hammer and sickle, which also appeared on the Red Star badge on the uniform cap of the Red Army uniform and in many other places. (wikipedia)