What is critical race theory?

Critical race theory, a better name for it would be 21st century Marxism, is a dangerous idealogy. City Journal offers an indipensible summary of it. 

Here's a snippet:

Critical race theory is fast becoming America’s new institutional orthodoxy. Yet most Americans have never heard of it—and of those who have, many don’t understand it. This must change. We need to know what it is so we can know how to fight it. 

To explain critical race theory, it helps to begin with a brief history of Marxism. Originally, the Marxist Left built its political program on the theory of class conflict. Karl Marx believed that the primary characteristic of industrial societies was the imbalance of power between capitalists and workers. The solution to that imbalance, according to Marx, was revolution: the workers would eventually gain consciousness of their plight, seize the means of production, overthrow the capitalist class, and usher in a new socialist society. 

During the twentieth century, a number of regimes underwent Marxist-style revolutions, and each ended in disaster. Socialist governments in the Soviet Union, China, Cambodia, Cuba, and elsewhere racked up a body count of nearly 100 million people. They are remembered for gulags, show trials, executions, and mass starvations. In practice, Marx’s ideas unleashed man’s darkest brutalities. 

By the mid-1960s, Marxist intellectuals in the West had begun to acknowledge these failures. They recoiled at revelations of Soviet atrocities and came to realize that workers’ revolutions would never occur in Western Europe or the United States, which had large middle classes and rapidly improving standards of living. Americans in particular had never developed a sense of class consciousness or class division. Most Americans believed in the American dream—the idea that they could transcend their origins through education, hard work, and good citizenship.

Most. But not the angry left.