In a timeline which Barty will likely never visit again, the Minister has been killed.

This was not the random cruelty of common violent criminals, not a pointless, nihilistic act of evil. This was a targeted political assassination; it had meaning and purpose. Just weeks ago, he would have been happy, or at least supportive. Now, he almost thinks he should be outraged, even horrified, but he is not. He is blandly interested. He neither supports not opposes this act.