In the article that you posted, it says clearly "He served a jail sentence for the murder," his debt to society has been paid.
Do I believe in rehabilitation? Absolutely. That he went on to achieve the success he did is great. I don't see why you think this is being buried by the media when you heard of it ... in the media. Of course, there is a mass murder pretty much daily in the US to keep the press busy but you are completely incensed by a murder over half a century ago. What gives?