In fact, they believe that workers do not usually band together to rebel. Capitalism establishes a system of competition in which people work against each other, as the unemployment rate has increased. Therefore workers discriminate against each other based on race and sex and therefore cannot form a united front. Even if workers revolt, opponents believe that workers are not a strong enough force to overturn social structures that have existed for many centuries. However, in the 21st century, discrimination is a serious problem and is not accepted by society. Therefore, discrimination is becoming less common, as judgments based on race or gender have become frowned upon. Furthermore, workers formed more unions, overcoming discrimination. In the United States, 14.5 million salaried workers are members of a union. These unions pursue better collective working conditions and have managed to increase their wages