So let's say you're a university, and you want to host a controversial person. Let's say they are a white supremacist, militia type, or a terrorist or former te

So let's say you're a university, and you want to host a controversial person. Let's say they are a white supremacist, militia type, or a terrorist or former terrorist, or whatever. You conduct a legal analysis and believe you're not breaking any laws by doing this, and are prepared to defend this in court if necessary. Large in-person gatherings are not an option in 2020, so is there a "decentralized" videochat platform that the university can use and host themselves, so that they bear the entire legal risk?