I recall two instances. Brno death march and the deliberate bombing of Berlin civilians. Many died in the expulsions. However this probably doesn't begin to cover the topic.

There was the famous Der Sturmer (original stormfront before reddit), Julius Streicher: https://en.m.wikipedia.org/wiki/Julius_Streicher

From the execution portion relevant to today: "They further argued that he kept up his antisemitic propaganda even after he was aware that Jews were being slaughtered."

There was also William Joyce, executed by the British, and collaborator Philippe Henriot, killed by resistance members.

I've also heard of lynched propagandists but was only aware of these guys.