Articles on fear: ( https://www.philosocom.com/post/void-fear-the-fear-from-nothing
Fear, although undesired by many, is often a "good" way to keep people under control/influence by authorities, bullies, and manipulators. Fearmongering, intimidation and terrorism are such examples for that end. By installing fear among the populace, you increase their own paralysis from doing anything that goes against what the installed fear advocates as what "should" or "needs" to be avoided.
It is possible that there are people of some power even today who use the method of fear-installing to keep the supervised body/ies from doing anything they (the people of power) don't want them to do.
If the last statement is true, then there are indeed people whose fear has taken too much control over their lives, when "too much control" can be described as equivalent to the paralysis of the self. In other words, fear can paralyze your autonomy, and not only compromise it greatly. Those who are fearful are less likely to do things they would otherwise do. That includes actualizing themselves.
(I wouldn't make this site if I never overcame my social anxieties, and succumbed to those who wanted to keep me down. We shouldn't be slaves to our fears.)
In most cases where the statement may be true, the implementation of fear into the consciousness is often not justified enough, and/or immoral, even if the method itself has proven to be effective.
The corrupt possibilities of being in a state of authority can easily blind the figure of power if they are not strong enough to resist the temptation of abusing their power through an enduring moral code.
Because it can be possible that most occasions where authority limits the internal or external freedom of the individual are not justified, the individual has technically the right to resist such implementation when they believe they have a justified reason to want to live in a state of fearless peace and harmony.
The potentially only good occasion where fear should be implemented upon others is when the situation at hand is about life and death and can save our lives with minimal to no casualties. In that sense, it is indeed not only effective but a good functionality of fear.
Ironically, an example for the usefulness of fear as a way to save lives, is something called MAD, or Mutually Assured Destruction. It's about nuclear weapons.
But beyond fatal potentials, we all have the right to want to live in peace and with as little fear as possible, and resisting, even if it will be met with negative feedback and disapproval, is nonetheless justified, because no one has the right to make us fear from doing things we want and/or need to do.
Hence why the writer should write, the speaker should speak, and the artist should resume their work even when met with people who don’t want to consume their content, because their lack of will alone does not justify the dominance of a potential self-paralysis, even if the people in question are of authority. People of authority cannot just order you to shut up by their mere will to do so; an additional justification is required.
Therefore, whenever you feel afraid of something or someone, ask yourself if there is actually something to be afraid about. If you can find at least one very good reason as to why you should not fear, practice overcoming this fear. Remember that you too have a place in this world, no matter how many people tell you to "go home" and "be quiet." Irrational, disproportionate emotions often lead to irrational, disproportionate people, which is not necessarily a beneficial state of being in this context. By "beneficial", I refer to one's ability to get things done and, of course their right to express their existence within a collective environment.
And finally, a tip: whenever you are very worried to the extent of fear, practice a mantra or melody that you will associate with bravery and triumph, and think about it while the emotion arouses. Perhaps this tip will help you better cope with the often-irrational proportions of fear or major worries.
Just remember that if there's really no threat in doing something, no danger of real subtance, then maybe you shouldn't fear doing it. Don't let your anxiety make up a fuss.