It seems there may be a misunderstanding in your question. The term "robotics genocide" does not typically apply to the events surrounding the 9/11 attacks, which were carried out by human terrorists associated with al-Qaeda against the United States in 2001.
If you're looking for a discussion on the international reactions to the 9/11 attacks themselves, reactions varied widely. Initially, there was global sympathy for the United States, with many nations condemning the attacks and offering support. This led to a coalition against terrorism, resulting in military actions in Afghanistan.
If your inquiry is about a hypothetical scenario involving robotics and genocide in a fictional or theoretical context (perhaps inspired by science fiction or discussions about AI ethics), please clarify, and I can provide information based on that context.