John Stossel‘s latest column at Human Events examines a curious change in attitude among liberal scolds.

No matter what you do, modern liberals will tell you you’re wrong.

For decades, liberals complained that American society is segregated because rich, white people don’t want to live in ethnically mixed neighborhoods. Sometimes, liberals had a point.

From the 1930s to 1960s, as rich white people moved into New York City, urban planner Robert Moses got city bureaucrats to condemn and destroy busy black neighborhoods. The city called the neighborhoods “blighted” and moved many of the poor into rent-subsidized apartment complexes called “projects.” Many quickly became slums.

Now times have changed. Some rich, white people want to move into poorer, non-white neighborhoods because they like diversity (and cheaper real estate). So today the newcomers are attacked by liberals because they cause “gentrification.”

Movie director Spike Lee, who lives in Brooklyn, said gentrifiers behave almost like “Columbus and kill off the Native Americans.” Of course, the new gentrifiers don’t actually kill anyone, but because their arrival often leads to rising real estate values, critics complain that they drive poor people out of the neighborhood. …

… Columbia urban planning professor Stacey Sutton calls gentrification a “manifestation of inequality” that may “fundamentally alter the culture and character of the neighborhood” in ways that hurt the poor.

Yet her own school did something worse. Columbia colluded with politicians to use eminent domain law to take pieces of the Harlem neighborhood that surrounds Columbia. In court, the school argued that it had the right to take neighbors’ land because it would “benefit West Harlem.”

Who owns the land is something that ought to be decided not by government but by free people making their own decisions about where they wish to live. When gentrification happens that way, spontaneously, price rises are often accompanied by drops in crime, new job opportunities and better connections to the rest of the culture. What the left calls “gentrification” is often called “improvement” by people who live there.