The blood-stained hat Michael Collins wore when he was gunned down at Beal na mBlath in 1922 has been removed from display at the National Museum on Kildare Street.

When the Collins exhibition was moved to Collins Barracks in 2006, curators felt the removal of the cap would be more in line with its “modern” museum ethics, the Irish Examiner reports.

Dr Audrey Whittey, who is the Keeper of the Art and Industrial Division at the museum, said the decision to remove the hat was made out of respect Collins’ descendants over a decade ago.

“The cap is no longer on display and one of the reasons is due to the sensitivity of General Collins’s blood and organic matter on the object, which is an integral part of the artifact itself."

Read More: Long-lost photo of Michael Collins taken hours before his death found in Dublin attic

However, Collins’ coat is still on display, and Dr. Whittey says having both coat and cap on display was not necessary.

Michael Collins.

Michael Collins.

“The blood on the greatcoat is more subtle and not as graphic and it has the mud from the scene that day at Beal na mBlath,” she said.

She added: “Curators, in taking the decision on the cap, realized the coat, with the mud stains and blood, would have told the story on its own, regardless.”

“The coat on its own speaks volumes.”

A grand nephew of Michael Collins has accused the museum of trying to “hide the horror of the civil war.”

Robert Pierse, the head of a legal firm in Listowel, said the hat should be immediately put back on display with his greatcoat. He said he was never contacted by the museum about the removal of the hat and the family had no problem with having the cap remain part of the exhibition, the Irish Examiner reports.

"It should be on display to remind us of the horror of the civil war and what people can do to each other, brother against brother," he said.

“What the National Museum have done is all part of political correctness rubbish.”

Read More: Hour-by-hour - the road to Michael Collin's death at Béal na mBláth 96 years ago today

"They talk about ethics; what is ethical in hiding the truth. The words 'ethics' and 'love' are the most abused words in the English language.

"The cap shows Michael Collins was shot in the back of the head and you can't hide the reality of the dreadful things that happened during the Civil War.

"Collins would never have thought that he would be shot by one of his own."

The cap is preserved and can still be viewed at the museum by prior appointment.

Photo of Michael Collins taken hours before his death on August 22, 1922.