Elon Musk is unambiguously calling for a violent race war.
This is far from unprecedented. The Rwandan Genocide was stoked and enabled by Felicien Kabuga, the wealthy owner of the RTLM radio station that helped coordinate the genocide and used euphemisms like "go to work" to signal attacks.
there were already many reasons to do this but Elon Musk actively encouraging racist violence in Belfast should be the final straw for every UK government institution to stop doing business - including being on X - with him in any way, and for him to be barred from entry to the country.