Peter Yarrow is best known for his work with Peter ... You can honor him and all those who have been killed by guns by saying, ‘That's not OK. It isn't OK to be suffering like this.

The singer-songwriter and social activist best known as one-third of the folk-music group Peter, Paul and Mary, has died at age 86. Peter Yarrow died Tuesday at his home in New York.

Peter Yarrow is best known for his work with Peter Paul and Mary ... You can honor him and all those who have been killed by guns by saying, ‘That's not OK. It isn't OK to be suffering like this. We ...