No because it’s a quote from Shakespeare’s play Julius Caesar. He never actually said that that we know of
respectfully mad is the answer
What sparked the Boxer Rebellion was "proto-nationalist sentiment and opposition to foreign imperialism and associated Christian missionary activity." It was crushed by the Great Powers, which was the United Kingdom, Austria-Hungary, Russia, Japan, France, the United States, Germany and Italy who came in and defeated the Chinese forces.
I think it was James Monroe