Cancel Culture
The President had heard a great deal about cancel culture, and he agreed it if was the proper culture it should be cancelled so he ordered all the nation’s labs to stop growing improper cultures. No one knew what improper cultures meant (and their funding was at stake) so they stopped any cultures in their labs except the President’s culture, which they adopted.
When he asked an advisor, the President was told that the practice once was called shunning and went back to the beginning of people gathering in groups. Shunning was always practiced but, with the internet and current politics, shunning had escalated dramatically. Especially aggrieved were conservatives who had been shunned themselves, and at least some of whose concerns had proven true.
When the new President was elected, with an understanding of cancel culture, he went after his enemies and shunning became official national policy. The President then sent troops into the streets, stating that crime was a culture which desperately needed cancelling. The troops arrested many and those who were not citizens were deported to either Africa or South America, areas the President thought corrupt. The President then decided that there were whole cultures he did not like, starting in Africa, and so he cancelled them (with nukes.) He wanted to cancel some Asian countries, but they also had nukes, so he focussed on Mexico and Central and South America. He had more than enough nukes and in his national statement declared no one would miss those countries, their food gave people diarrhea.
Citizens believed the President right. The society was full of groups and those which were not already cancelling enemies now began in earnest. There was no reason to tolerate different opinions when they were perceived as a threat. Eventually enough negative energy was created that the entire nation cancelled itself by transporting into another dimension. Unfortunately, in that dimension where accepting differing opinions was the norm so the nation was transported again and in this dimension people were did not understand the concept of arguing, and for decades the nation transported through dimensions, unable to find a home so it returned to the Earth and settled on the far side of the Moon where it unfortunately made space suits with oxygen illegal as they were not natural and might give people autism.