"It received support from the government-controlled Radio Rwanda, which initially allowed it to transmit using their equipment. ... Critics claim that the Rwandan government fostered the creation of RTLM as "Hate Radio", to circumvent the fact they had committed themselves to a ban against "harmful radio propaganda" in the UN's March 1993 joint communiqué in Dar es Salaam. ... During the Genocide, the RTLM acted as a source for propaganda by inciting hatred and violence against Tutsis, against Hutus who were for the peace accord, against Hutus who married Tutsis, and by advocating the annihilation of all Tutsis in Rwanda. ... An estimated 10% of all the violence within the Rwandan Genocide is resulted from the hateful radio transmissions sent out from RTLM."

Interesting. Something I might say: given that the reigning government was supporting this stuff, as well as an animated and violent mob from the general population; and given that the "deplatforming" under discussion is done via social pressure, corporate action, and/or conceivably government intervention: how would any kind of mechanism for "deplatforming" have done anything to stifle this RTLM? If anything, such a mechanism would have been directed at dissenting voices.

"One of the major reasons that RTLM was so successful in communication was because other forms of news sources such as televisions and newspapers were not able to be as popularized because of lack of resources." Apparently there was a dissenting radio station, but Wiki says "Radio Muhabura had a much smaller audience, probably because it broadcast in English instead of Kinyarwanda", which is unfortunate. So I guess there was no need for the government to deplatform any dissenting voices, because there weren't any significant ones. Therefore, one could argue that the Rwandan genocide is an illustration of what might happen if the ruling party+mob manage to deplatform everyone who disagrees with them. :-)