Incitement to violence is rarely explicit – here are some techniques people use to breed hate

... Dangerous speech is defined as communication encouraging an audience to condone or inflict harm. Usually this harm is directed by an "ingroup" (us) against an "outgroup" (them) – though it can also provoke self-harm in suicide cults...

https://theconversation.com/incitement-to-violence-is-rarely-explicit-here-are-some-techniques-people-use-to-breed-hate-153585