Introduction:
Karl Marx was a German philosopher, economist, and sociologist who developed the theory of Marxism. His thoughts and beliefs convinced workers to enter into conflict with capitalists by highlighting the exploitative nature of the capitalist system and the inherent contradictions within it.

Key Points:

1. Capitalist Exploitation:
Marx argued that under capitalism, the bourgeoisie, or the capitalist class, exploits the proletariat, or the working class. He believed that capitalists extract surplus value from the labor of workers, paying them wages that are less than the value they produce. This unequal distribution of wealth and power forms the basis of class conflict.

2. Class Struggle:
Marx emphasized the idea of class struggle as a driving force in history. He believed that the interests of the bourgeoisie and the proletariat are fundamentally opposed, leading to inherent conflict between the two classes. The bourgeoisie seeks to maintain its dominance and maximize profits, while the proletariat struggles to improve their working conditions and wages.

3. Alienation:
Marx also highlighted the alienation experienced by workers under capitalism. He argued that labor becomes a commodity and workers are reduced to mere tools of production. This alienation results from the separation of workers from the products of their labor, the loss of control over the production process, and the dehumanizing nature of repetitive and monotonous work.

4. Economic Crises:
Marx believed that capitalism is prone to economic crises and instability. He argued that capitalist economies are characterized by cyclical booms and busts, leading to unemployment, poverty, and social unrest. These crises are a result of the inherent contradictions within the capitalist system, such as overproduction, underconsumption, and the concentration of wealth.

5. Historical Materialism:
Marx developed the concept of historical materialism, which posits that the development of society is driven by material conditions and the struggle over the means of production. He believed that capitalism is a transitional stage in human history and will eventually be replaced by socialism and then communism.

Conclusion:
Karl Marx's thoughts and beliefs convinced workers to enter into conflict with capitalists by exposing the exploitative nature of capitalism, emphasizing class struggle, highlighting the alienation of workers, predicting economic crises, and proposing an alternative socialist society. His theories continue to influence modern understandings of class relations and societal change.