For example, what if we were to start sterilizing criminals, as another punishment in our current regimen of (community service, prison time, fines, imprisonment, capital punishment)? Seems like a pretty obvious win to me.
One major issue that I see with this is that in our legal system (by which I mean the American system in particular, although this is true of others to varying extents,) where arrest and conviction and degree of punishment are subject to discretion by the officials charged with enforcement, they tend to vary tremendously with factors other than likelihood or severity of guilt. So while the intent might be to gradually filter people with criminal inclinations from the gene pool, the real effect is unlikely to be an evenhanded application of that process.
Hm. Well, if we identify specific genes associated with criminality, then the law could be more objective: commit a felony and if you have a criminal gene, you get sterilization in addition to whatever your punishment would have been.
Related: The Blank Slate, The Psychological Diversity of Mankind, Admitting to Bias
"Hjernevask" a well known (in Norway at least) documentary series that I am sure will be interesting to rationalists here is now available with English subtitles online. Produced by Ole Martin Ihle and Harald Eia a Norwegian documentarian and comedian, it casts a light on both ways in which we know people to be different as well as the culture that is academia in the Nordic country and probably elsewhere as well.
The Series
The link go to the YouTube videos with English subtitles. Because linkrot sucks I'm providing another source for the videos.
Some Commentary
There was very little in the series that I found new and disagreed with some presentations. But this is not surprising given my eccentric interest in humans. (^_^) I found the interviews with the scientists and academics interesting and think that overall the series presents a good overview something well worth watching especially considering some of the debates I've seen taken place here recently. (;_;)
The latter wrote that in a 2010 article on the documentary series that I would also recommend reading. HT to iSteve where it is quoted in full.