I realise that some people would consider a thought, idea or an emotion 'sinful' particuarly sexual fantasies, or extreme or controversial ideas because they are unpopular. I think people who practice meditation may well have their own view on how ideas help or hinder a meditative state. Another example is the notion of political correctness, that racist, sexist, homophobic, etc, ideas are morally wrong. Many people would also use say that some ideas are 'un-natural' and 'unrealistic' as a put down, or attacking them because they do not correspond to religious or scientific beliefs.
So I'm wondering if you think Ideas have an intrinsic moral value, such as thinking they are good and evil. Does they have this value because or irrespective of them being true or useful?
Should we have the freedom to entertain bad or evil ideas, are some ideas so bad or evil that they have to be criminalised in some form (e.g. censorship) and are there some ideas so good that they have to be promoted widely through education/propaganda?
What comes to mind is this quote:
Your beliefs become your thoughts,
Your thoughts become your words,
Your words become your actions,
Your actions become your habits,
Your habits become your values,
Your values become your destiny.
― Mahatma Gandhi
The question really is is there anything that is inherently evil? You cite political correctness. If the good is a goal to allow diversity within a society, than anything which works against this is "not-good". To attack each other with words does not support a peaceable world. But what is the source of words, but thoughts, and further back beliefs. If someone decides it is good to respect others, then changing the habits of mind is good.
Can this be enforced on others to change their thinking? No, but we can enforce that the words and actions that bring about harm to others be censured. I liken it to someone smoking around those who don't. It's obnoxious and a violation of someone's right to breath clean air and not be exposed to a risk to themselves by the rights of others to smoke. The smoker is free to go stand away from society and smoke all he wishes and return when the smoke has cleared.
Hopefully this standard of society will lead the smoker to want to change his own thoughts about the value of smoking for himself, as he does make himself a bit of a social pariah, having to go stand in a corner to take his drug away from others. That leads to a decision in himself for himself to change his own habits of mind. It is not put upon him by others to be punished for his thoughts, but only the behaviors which affect others. Freedom still exists for him to believe smoking is good, to light the cigarette and derive temporary relief from the nicotine, etc. But the boundaries are balanced between his rights and the rights of others. No one is forcing him to change himself, only to respect others. To change or not to change is his choice.
For the most part I am a relativist and do not believe in any inherently good or bad in thoughts or ideas, but I would say generally anything that helps others is better than harming others. So whatever promotes that is good, and whatever harms that is bad.