On the web site of the Library of Law and Liberty Dalrymple looks at the live-TV murders in Virginia and identifies three of the perpetrator’s flaws that contributed to the crime: paranoia, a desire for fame and anger:

It ought to be obvious that those who love justice ought not to commit injustice themselves. But anger makes matters worse even than La Rochefoucauld suspected when he wrote that love of justice in most men is merely fear of suffering injustice. Anger makes us love injustice, provided that it is we who are committing it. An atmosphere of rage is concomitantly one of righteous (or self-righteous) cruelty.