On March 20, 1939, the Nazis set fire to thousands of paintings and sculptures in Berlin. Countless prints and watercolors and drawings deemed to be “degenerate” were destroyed in the courtyard of the city’s fire department.

The heinous atrocities committed against artists on that day have been lost in the mists of time, overshadowed by the unspeakable book burnings of May 10, 1933.

I suspect the culture jihad waged by the Nazis on European history is not part of the curriculum being taught in American world-history classrooms. It’s been all but erased from memory.

And that’s a shame because history is repeating itself — not in Germany, but in the United States.

The San Francisco School Board voted Tuesday to destroy a historic fresco of George Washington that includes images of slaves and a dead Native American.

School leaders said the 1,600-square-foot mural must be removed from George Washington High School to make reparations for historic wrongs, the San Francisco Chronicle reports.

“It might be art and it can also be racist; it can be both,” board member Allison Collins told the newspaper. “It’s not just about removing them from public view, it’s also about righting a wrong.”

The mural, titled, “Life of Washington,” was commissioned by the Works Progress Administration and created by Russian-born artist Victor Arnautoff.

The two most controversial panels show Washington among his slaves at Mount Vernon and another in which he directs white men with guns westward over the body of a dead Native American, as described by KQED.

“This is reparations,” board member Mark Sanchez told the radio station.

Their plan is to literally paint over and whitewash American history.

The Chronicle reports critics want the mural to be painted over with “white paint” — arguing students should not be subjected to the offensive images.

“This mural is not teaching students about the history of slavery and indigenous genocide under George Washington or other white settlers,” graduate Nancy Truong told the newspaper. “Instead it is teaching students to normalize violence and death of our black and indigenous community.”

A number of historians and art critics urged the district to reconsider the destruction of the fresco, but their voices were drowned out by the politically correct mob of culture jihadists.

The evidence is clear. A new generation of fascists has been birthed in public-school classrooms and it is slowly turning our culture into a heaping pile of rubble.

First they came for the Confederate statues and monuments. Then they set about banning books like Huckleberry Finn and Little House on the Prairie and To Kill A Mockingbird. And now they are coming after historic paintings.

As the statesman and philosopher Edmund Burke once said, “The only thing necessary for the triumph of evil is for good men to do nothing.”

It’s time for the good men and women of America to do something.