Final answer:
Some people see union organizing as a socialist concept due to historical associations with socialist movements and the vision of worker-owned factories and mines. This perception has persisted over time.
Step-by-step explanation:
Some people see union organizing as a socialist concept due to historical associations with socialist movements. At the turn of the century, a small number of labor leaders turned to socialism and its vision of worker-owned factories and mines. Socialists believed that the government should control productive property such as factories and farms. This association between unions and socialism has persisted over time, contributing to the perception of union organizing as a socialist concept.