Is there a peer reviewed paper showing their findings? The author is an academic who says he has studied this, but there is no link to such a paper.
I would also note that police usually investigate people who knew the victim, rather than people who were morally opposed to them. But I don't have a peer reviewed study either.
Tage Rai, the author of the article has written a book 'Virtuous Violence' [0] published in December 2014. I'm guessing the article is taken from that.
I would also note that police usually investigate people who knew the victim, rather than people who were morally opposed to them. But I don't have a peer reviewed study either.