Americans are getting a major wake-up call on a matter of profound historical significance.

It was brought to us by the deaths of African-American men who died in police custody. It has evolved into demonstrations, peaceful protests and, yes, into terrible riots. Set aside the violence for a moment and let’s look at the event that has been thrust into our consciousness.

Juneteenth is celebrated every June 19 by the African-American community. It marks the day in 1865 when Union soldiers arrived in Galveston to tell blacks they had been emancipated, freed from enslavement. They were free men, women and children.

Many millions of Americans knew of Juneteenth, they knew about the event that some of us celebrate every year. We now are being educated. Juneteenth represents a seminal moment in American history.

Accordingly, we now are hearing from members of Congress — yes, from both major political parties — who are calling for Juneteenth to become a federal holiday. I am not usually a fan of legislative remedies of this sort, matters brought to us through tragedy. They too often seem like an overreaction.

Not this time! Juneteenth is as significant an event as any that have occurred. It brought an end — finally! — to the curse of enslavement. The 13th Amendment to the Constitution wiped slavery off the books at the end of 1865.

I am heartened to see Republican U.S. Sen. John Cornyn of Texas present legislation seeking to establish Juneteenth as a federal holiday. He no doubt will have plenty of Democratic support among his Senate colleagues.

I realize fully that creating a new federal holiday will not assuage the concerns of Americans about the treatment of black citizens at the hands of some white-dominated law enforcement agencies. The work to right those wrongs must proceed. I also realize that not all police are evil, that the overwhelming majority of law enforcement officers are men and women of high honor and integrity. The events of recent weeks have brought vivid clarity to the concerns raised for too long by African-Americans about the treatment they receive from police agencies.

That clarity now also includes an understanding of the significance of Juneteenth, not just to African-Americans, but also to the entire nation. Yes, it is past time to set that day aside as a national holiday.