On July 1, at the start of the Independence Day weekend, we learned that income inequality in this country became even worse last year.

Economic inequality produces scars that last a lifetime – and even longer. That’s one reason why President Obama said in 2013 that “increasing inequality … challenges the very essence of who we are as a people.”

Well, that challenge just became even greater. Economist Emanuel Saez’s groundbreaking studies of inequality have helped reshape the political debate. In a July 1 publication, Saez found that the wealth gap between the top 1 percent and the remaining 99 percent became even worse in 2015. Earnings for the top 1 percent reached a “new high” that year. The 1 percent’s income increase of 7.7 percent was nearly twice everyone else’s.

Saez revisited several years of data and found that:

“(I)ncomes (adjusted for inflation) of the top 1 percent of families grew from $990,000 in 2009 to $1,360,000 in 2015, a growth of 37 percent … (while) the incomes of the bottom 99 percent of families grew only by 7.6 percent–from $45,300 in 2009 to $48,800 in 2015.”

Saez adds, “As a result, the top 1 percent of families captured 52 percent of total real income growth per family from 2009 to 2015.” He concludes:

“This uneven recovery is unfortunately on par with a long-term widening of inequality since 1980, when the top 1 percent of families began to capture a disproportionate share of economic growth.”

1980 was the year Ronald Reagan first took office, heralding a new era of economic conservatism in the United States. The message of these numbers couldn’t be clearer: it’s time for that era to end. Our 35-year experiment with conservative economics has failed.

Saez’ figures included a slight consolation prize for the 99 percent: Its average income rose by 3.9 percent last year, the biggest increase in 17 years. That’s an improvement, of course, but it’s not nearly enough. The 99 percent has endured decades of wage stagnation, and its income was essentially frozen in place between the 2008 financial crisis and 2013.

A society with such extreme and growing inequality can’t sustain itself forever. Inequality interferes with economic growth, robs people of opportunity (and with it, hope), dooms millions to poverty or near-impoverished conditions, and offends that part of the human spirit that constantly searches for fairness and equality. An overly unequal society like ours is inherently unstable, especially when its political system gives extremely wealthy individuals and corporations excessive control over the government – thereby perpetuating and amplifying their own wealth and power.

It will take years of work to repair the economic damage caused by these levels of inequality. And it’s important to remember that, while we measure many of our economic statistics on a quarterly or yearly basis, the human damage often lasts much longer than that.

Workers who suffer a period of unemployment or a drop in pay typically see their earnings decline for the rest of their working lives. This effect is particularly pronounced among recent college graduates, many of whom graduated into one of the worst job markets in history. Their income is likely to suffer through their entire careers as a result – while, at the same time, they have been saddled with the greatest student debt burden in human history.

Lower incomes are tied to higher infant mortality, shorter life spans, and poorer mental and physical health for parents and children alike.

Economic damage is often carried down the generations, through the children. Poverty can inflict lifelong damage on a child’s health and ability to earn. Economic mobility is very low in this country; parental income has an enormous influence on the earning power of children, and studies have consistently shown that Americans enjoy much less upward mobility that residents of Canada and most Western European nations.

What can we do to reduce inequality and heal some of its deep, long-lasting wounds? Here’s a partial list: We can increase funds for antipoverty programs that provide food, shelter, and other services directly to the poor. We can improve our educational system and provide tuition-free public college to all qualified students. We can address the systemic racial injustice that deprives communities of color of economic resources. We can raise the minimum wage, which has fallen far behind inflation (and even farther behind productivity) since 1968. ($15 an hour is a good number.)

We also need to strengthen the labor movement. A recent study by the International Monetary Fund found that a “decline in union density has been strongly associated with the rise of top income inequality” and that “unionization matters for income distribution.” We must provide health insurance for all, and ensure that all working Americans have access to the paid leave programs and other benefits found in other developed countries. We must expand initiatives for worker-owned businesses.

What’s more, we need to do these things quickly, before income inequality – and the loss of democracy that accompanies it – grows so great that it becomes irreversible.

The Fourth of July has come and gone. But the scars of inequality are still here, depriving millions of us of the freedom to choose, to grow, and even to live. Our work has just begun.

This blog originally appeared in ourfuture.org on July 6, 2016.  Reprinted with permission.

Richard Eskow is a Senior Fellow with the Campaign for America’s Future and the host of The Zero Hour, a weekly program of news, interviews, and commentary on We Act Radio The Zero Hour is syndicated nationally and is available as a podcast on iTunes. Richard has been a consultant, public policy advisor, and health executive in health financing and social insurance. He was cited as one of “fifty of the world’s leading futurologists” in “The Rough Guide to the Future,” which highlighted his long-range forecasts on health care, evolution, technology, and economic equality. Richard’s writing has been published in print and online. He has also been anthologized three times in book form for “Best Buddhist Writing of the Year.”