The billionaire investor Peter Thiel has accused Google of “treason” and called for a law enforcement investigation of the search engine’s parent company. He speculated that the Chinese government has invaded its employee ranks. A German immigrant via South Africa, Thiel is not alone; his remarks echo the repeated assertions of the rabble rouser Steve Bannon that there are too many Asian CEOs in Silicon Valley.

These claims, combined with similar charges of wrongdoing against students and professors of Chinese origin on campuses across the country, are as ominous as they are lurid. While Thiel presents no evidence, Bannon displays ample prejudice. They are inspiring paranoia about everyone of Chinese heritage.