Published Tuesday, 06 November 2012
While the funeral for the murdered prison officer took place in Cookstown, hundreds fell silent at 1pm in Belfast.
A lone piper played the lament at the rally which was organised by the Irish Congress of Trade Unions (ICTU).
The organisation said it was an opportunity for working people and their families to express their sorrow and disgust at "this heinous attack on a public servant".
"Today it is a symbolic day," explained Peter Bunting from ICTU.
"The time of the rally coincides with David Black's funeral and it gives us an opportunity more or less, to follow that evil prospers when good people do nothing.
"Therefore the trade union movement will stand in solidarity with the Black family and workers irrespective of who they are, who are under threat from anyone."
He said during the 15 minute vigil, people stood in support with their Prison Service colleagues across Northern Ireland.
"It's a more poignant moment to have a silent vigil that's not the normal trade union rally," he explained.
"It's showing our abhorrence against dissident republican violence, or indeed violence from any other quarter."
© UTV News