Contrary to claims by the US president, we have found that diversity initiatives result in better scientists and greater progressChristina Pagel is a member of Independent SageDonald Trump’s attacks on diversity, equality and inclusion (DEI) initiatives since his January inauguration have been intense, indiscriminate and escalating. A tragic plane crash was baselessly blamed on DEI. All DEI programmes within public bodies have been ended and private contractors face cancellation if they also don’t comply. Webpages that defend religious diversity in the context of Holocaust remembrance have been taken down.Science and academia have been particularly targeted. Universities are threatened with losing