The Taken star has teamed up with the human rights charity to produce the video as part of a drive to change the country's strict anti-abortion laws.

The movement aims to abolish Ireland's eighth amendment, which gives constitutional rights to a foetus even in the early stages of pregnancy, and Liam addresses the issue in the chilling black and white footage, which shows images of a ruined church and gravestones.

"A ghost haunts Ireland. A cruel ghost of the last century. Still bound to the land," he says. "It blindly brings suffering, even death to the women whose lives it touches. Feared by politicians, this is a ghost of paper and ink. A spirit that lives in a constitution written for a different time. It is the shadow of the country we hoped we had left behind. Ireland doesn't have to be chained to its past. It's time to lay this ghost to rest. Repeal the eighth."

The video, titled Chains, was produced by celebrated comedy writer/director Graham Linehan, the brains behind sitcoms including Father Ted and The IT Crowd.

A number of Irish stars, including actor Cillian Murphy and Oscar-nominated director Jim Sheridan, recently backed a similar drive called the Artists' Campaign to Repeal the Eighth Amendment, which also aims to change Ireland's abortion laws.