Tributes have been paid by members of the public who say he gave a voice to those who weren't believed.
Abuse survivor Michael O'Brien has died in his native Tipperary.
He rose to prominence with a powerful appearance on RTE's Questions and Answers in 2009 where he discussed his experience of sexual abuse.
He was a former mayor of Clonmel in Tipperary.
Tributes have been paid by members of the public who say he gave a voice to those who weren't believed.
Here's the moment he discussed how his wife saved him from taking his own life.
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