WASHINGTON (AP) — The Republican-controlled House scrapped a vote on permitting the Confederate flag at Park Service-run cemeteries on Thursday, a retreat under fire that only escalated a ferocious attack by Democrats complaining the banner celebrates a murderous, racist past.

“What exactly is the tradition of the Confederate battle flag that we’re supporting?” Rep. Hakeem Jeffries, D-N.Y. demanded as racial political tensions flared — ironically enough, on the day the same banner was losing its place of honor on the grounds outside the South Carolina capitol.

“Is it slavery, rape, kidnap, treason, genocide or all of the above?” he asked.

No Republican rose to respond, although some officials privately charged that Democrats had falsely accused GOP lawmakers of racism. They noted the proposal would merely have written Obama administration policy into law.

Speaker John Boehner, R-Ohio, referring to the removal of the flag in South Carolina, said it was time for “adults here in Congress to actually sit down and have a conversation about how to address the issue.”

In response, Democrats ratcheted up their criticism, from the White House as well as the Capitol.

“These are these same House Republicans who voted for a party leader who once described himself as, quote, ‘David Duke without the baggage,’ ” said White House spokesman Josh Earnest. He referred to Rep. Steve Scalise, R-La., the third-ranking leader.

For her part, House Democratic Leader Nancy Pelosi offered legislation to remove all state flags containing any portion of the Confederate battle flag from the House side of the Capitol.

Boehner’s spokesman, Kevin Smith, said that amounted to a “cheap political stunt” after the speaker had called for private talks on the issue. He said the bipartisan discussions could potentially address Confederate symbols within the Capitol as well as at parks and cemeteries.

Republicans prevented a vote on Pelosi’s proposal by sending it to a committee for review — but Democrats slowed the tally by casting their votes manually instead of through an electronic tally system that is customarily employed.

Rep. John Lewis, D-Ga., a veteran of the Civil Rights era, said that was a form of non-violent protest of the type used a half-century ago.

Democrats also employed less obvious tactics. As Jeffries and other Democrats spoke, they were flanked by an oversized image of the Confederate flag they want to banish.

Republicans seem to be “wandering around in a cul de sac,” said Rep. Tom Massie, assessing the political ramifications of the events.

The developments were the latest relating to the Confederate flag in the House stemming from the shooting deaths last month of nine Bible study participants in a South Carolina church.

Earlier in the week, lawmakers decided by voice vote and without controversy to ban the display of the Confederate flag in Park Service-run cemeteries.

But GOP leaders soon became concerned that the overall spending measure it was attached to might fail — Democrats oppose it because they want more spending and some Republicans were unhappy with the prohibition on the flag. One, Rep. Stephen Palazzo of Mississippi, had said that lawmakers “from New York and California cannot wipe away 150 years of Southern history with sleight-of-hand tactics.”

That led briefly to plans to reconsider the prohibition, and then a highly unusual statement by the measure’s chief Republican sponsor after the subsequent decision to reverse course.

Rep. Ken Calvert, R-Calif., said the now-abandoned proposal “had been brought to me by leadership at the request of some southern” GOP lawmakers, and also would have written into law existing National Park Service regulations approved by the Obama administration.

At the same time, he said he regretted not telling Democrats in advance about his plans.

Whatever the political fallout, the proposal would have permitted the limited display of the Confederate flag at Park Service-run cemeteries in states that observe a holiday commemorating the Confederacy, and only at the graves of rebels who died in the Civil War.

In line with a Park Service memorandum from 2010, it would have affected 10 graveyards, including four in Tennessee, three in Virginia and one each in Louisiana, Mississippi and Georgia.

Park Service spokeswoman Kathy Kupper said one of the Confederate’s grave was at Andersonville cemetery in Georgia and two each were at Shiloh in Tennessee and Vickburg in Mississippi.

Among the 20,000 graves at the Vicksburg National Memorial park in Mississippi are two that hold the remains of Confederates, according to Ray Hamel, a park ranger at the site. He said both men — one from Texas and one from Arkansas — died in a nearby Union hospital and were mistakenly buried in the U.S. cemetery when it was established in 1866.

Hamel said that on Memorial Day, volunteers place small a small American flag by the gravesite of each U.S. soldier, and the two Confederate graves are decorated with the national flag of the Confederate States of America, with three wide bars — red, white, red — and a blue canton corner with a circle of 13 white stars.