The link has been pulled, showed a picture of INLA/IRSP down at the plague.
The people that done this are traitors, but I have to admit. I wasn't even that shocked when I heard about this, was just angry and disgusted. Like lost sheep. Found that link complete with photos etc. According to Kevin Myers USC Constable Plumb was from the Albertbridge Road. Better if these crawlers had put up a plaque to him. This is from another different site I found
From Joe O'Loughlin Blog Archive
Un-typed script.
Frank Flanagan now residing in Bishop Street, Ballyshannon, left Garrison (on the run) April 6th 1922. The Free State/Republican split was budding. April 5th 1922 Constable Plum was shot dead in ambush on the Garrison/Rossinver Rd. The Ambush was carried out by a group from Sligo area under a _ Glynn. The Garrison unit, under Frank Flanagan, was ignorant of this ambush – Frank Flanagan should have been consulted and the ambush carried out under his orders. The Sligo group it appears were a Republican or Irregular group. It remained in the area in possession of a hill for five days after the ambush. Plums body lay in an evacuated farm house for two or three days. The Black and Tans were appointed to recover his body. They threatened to burn Garrison if his body was not returned within a certain time. Rev. Mr. George O’Keefe, Church of Ireland minister, Garrison with Fr. Peter Connolly learned this from Capt. Bellie in charge of the Black & Tans operation.