Continued conversation about how a Massachusetts man convicted of killing his 2-year-old son with a Wiffle ball bat in 1983 has been granted parole after spending more than 40 years behind bars. The state's Parole Board unanimously approved the release of 78-year-old Richard Mayes, whose previous five parole requests had been denied. The decision has reignited debate over whether people convicted of violent crimes should be eligible for release after serving decades in prison.