A lot has been said about the recent tragedies NFL, about the prevalence of drunk driving, about how teams deal with grief, and about the effects of playing the game for so long. One of my favorite commentary comes from Jeffri Chadiha of ESPN.com (link above). Although he ultimately concludes that the problem in the league is one of decision making (which I somewhat disagree with), he points to actionable solutions the players and league can take to avoid preventable tragedies and calls for systemic, rather than just personal responsibility changes.
That is how public health works. We may be spurred by personal tragedies, but it's the institutional changes and the viable alternatives to dangerous activities that save lives in the long run.