There is a difference between skepticism and persecution. Saying an idea or theory is wrong or even garbage is skepticism. Lawsuits and blackballing is persecution. There are scientists who are being persecuted for even mild constructive criticism of orthodoxy. The whole climate change industry is a good example. In some cases, simply noting a need for further study in an area can bring down the wrath of the mediocrities pushing a worldview rather than science.
Agreed. The difference is largely one of degree. And motive.