hmmm... wikipedia doesn't support your claim, tho [1].
it seems like a lot of folks were encouraged to go out and kill, given machetes and told to kill, and in the end there's one study that suggests 10% of the violence could be attributed to the radio station (which was created to broadcast racist propaganda and obscene jokes).
specifically, I take issue with the notion that "hate speech" is a meaningful descriptor of a way of talking. racism, bigotry, etc... are more specific.
tangentially, I did find this:
> On March 20, 2017, Pope Francis acknowledged that while some Catholic nuns and priests in the country were killed during the genocide, others were complicit with it and took part in preparing and executing the genocide.
[1] - https://en.wikipedia.org/wiki/Rwandan_genocide#Preparation_f...