Where is the ethics when scientific information is misused?

We see doctors promoting pseudoscience on daily shows, companies using words related to science to sell products that are not evidence-based, conspiracy theories spread on social media and journalists hyping science news. Then we see politicians cherry-picking science information according to their needs.Doctors, scientists, journalists, and science communicators should follow their codes of ethics and avoid promoting misinformation. But what are they expected to do to fight the spread of fake science on social media, the audience beliefs in myths about science and health, and the lawmakers' manipulation of scientific information?