At first, I thought that you meant Nelson's column in Trafalgar Square (which I'd call a column), I'd forgotten about Nelson's Pillar in Dublin.

I thought you might like this news story:
Man detained in connection with bombing of Nelson's Pillar
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Gardaí have detained a man for questioning in relation to the bombing of Nelson's Pillar on O'Connell Street in Dublin in 1966. The man, who is from Walkinstown, is being held under Section 30 of the Offences Against the State act. He is being questioned at Store Street garda station and can be held for up to 24 hours.
And the date of the story?
Thursday, September 21 2000 - Someone took the post headed "Slow down", very seriously.