Steve Hochstadt is a writer, a gardener and a professor of history at Illinois College. 

I grew up in Carle Place, a new suburban town on Long Island, outside of New York City. Young families lived in inexpensive but well-constructed houses in quiet residential neighborhoods with good schools. When I get together with my classmates at reunions, we all agree that our little town offered a wonderful place to grow up.

I never thought about black kids, because I never saw one in my neighborhood or at my schools, right up through high school. I knew black people lived in other towns, and sometimes we faced black kids in athletic contests. I never wondered why they didn’t live near me.

Now I know. I’ve been reading a book titled “The Color Of Law” by Richard Rothstein, who explains how residential segregation happened in America and in my home town.

In response to the government-created Jim Crow discrimination in the South, millions of African Americans moved north in the Great Migration after World War I. At the same time, the nation’s population doubled from 1900 to 1950.

Facing growing population, American cities used zoning laws to direct new construction and to control where people lived. Across the country, zoning was designed to keep black and white apart, to protect white neighborhoods against black people. For example, in St. Louis zoning guided liquor stores, polluting industries, bars, and rooming houses into African American neighborhoods, preserving real estate values in white neighborhoods and creating black slums.

Private business supported segregation. The National Association of Real Estate Brokers adopted a code of ethics in 1924 warning its members that “a realtor should never be instrumental in introducing into a neighborhood members of any race or nationality whose presence would clearly be detrimental to property values.”

In the midst of the Depression, the federal government used its enormous resources to promote home ownership. In 1934, the Federal Housing Administration, part of the New Deal, created affordable mortgages and made loans to encourage home ownership based on color-coded maps of every city, where black neighborhoods were colored red, meaning no help for residents. After World War II, the newly created Veterans Administration offered mortgages to returning servicemen with no down payments and low interest rates, but only for whites.

Collaborating with private developers, banks, and realtors, the federal government helped create the new suburbs which mushroomed around America’s cities. I lived in a suburb built by William Levitt, whose name has become synonymous with suburbanization. His signature project was Levittown, a development with 17,500 mass-produced two-bedroom homes a few miles from where I lived. He repeated this success in Pennsylvania, New Jersey and Maryland. Behind him stood the FHA and the VA, which financed Levittown on the condition that it be all white. In 1953, the 70,000 residents of Levittown represented the largest all-white American community.

Carle Place was a microcosm of postwar America. Young white men and women could begin their long climb into affluence, security, and respectability through the American dream of home-ownership. Realtors would guide families into the mushrooming modern neighborhoods. Banks offered more favorable terms than ever before. And everybody depended on governments to allocate local spaces for new construction, advise the new projects, and guarantee the loans that bought the houses.

For white people. Not for black people.

So I grew up with no relationships with black Americans, whom I first met in college during the tumultuous years of the civil rights movement. By that time, for me and my suburban baby-boomer peers, getting to know African Americans was awkward and uncertain. We were all, black and white, deprived of the natural development of friendships across lines of race.

Blacks were deprived of much more than that. As I was growing up, Carle Place and much of Long Island embodied a futuristic landscape of tens of thousands of identical houses in geometric patterns on plowed over, treeless ground. Today shady streets, mature landscaping, and countless home expansions and improvements have transformed the aesthetics. The houses that cost about $10,000 to buy now sell for $400,000 to $700,000. Accounting for inflation, the white families like mine, that bought in the late 1940s and early 1950s, tripled or quadrupled their wealth through home ownership.

Instead, black families were forced to live in urban neighborhoods, where discriminatory zoning rules kept home values down. At least into the 1990s, toxic waste facilities continued to be built in minority neighborhoods. Urban highways were typically built through minority neighborhoods. It is still common in American cities to use zoning laws to place businesses that deal with alcohol, firearms, pornography, and now marijuana into low-income neighborhoods, preventing minorities there from building up equity as fast as in residential white neighborhoods.

The end of slavery in 1865 represented the beginning of other forms of government-enforced discrimination for another century. By helping white families to build up wealth through home ownership and preventing black families from doing the same, federal, state and local governments have contributed to today’s racial disparities in wealth.

As Richard Rothstein wrote, “Government and private industry came together to create a system of residential segregation.” All Americans have suffered from this history of racism.