I realized that I started doing this for myself to summarize the main takeaways on my own personal annotations. As I was doing this, I figured I might as well share to help everyone understand the key takeaways as well. I hope it helps!
Some key takeaways:
1) The study is about the importance between distinguishing offender and victim centered punitiveness
2) Different moral foundations (which vary greatly across culture/ethnicity/religion/etc, will constitute a punitive attitude.
3) Scholar Paul Robinson argues that the common punitive preferences (which are based in moral intuition) provide the basis for criminal law, but it is essential in doing so, but that lawmakers should re-check the morality of criminal code.
4) Other scholars argue that moral institutions do not favor those who are viewed as out-group members, and thus we must overcome our moral intuitions and enact policy out of rationality, not emotion.
5) The study is not one on what type of punitiveness should be adopted, but rather to just analyze the sentiments.
6) Geography matters -- Purity was highly valued in the political and religious conservative parts of the US. There is more evidence to suggest that these microcosms (across the US), have a different valuation of moral intuitions and thus shape their views on punitiveness.
7) Crime and punishment is also shaped for political gains because the endorsement of certain morals may be popular to garner clout.
There's obviously more, but that's a lot to cover. Again, I hope this brief summary helped!