If people don't want to talk about certain subjects they may feel uncomfortable with, do they have to?

Hi folks.

Now, I understand of course that indifference is not an option and that ignoring a problem isn't going to make it go away. I also understand that people are, and can be, different and some people react to certain matters differently than others. And there will always be disagreements, arguments, controversies, outrages, differences of opinion and handling of certain situations and that is simply a fact of life. However, I was also wondering...

If people don't want to talk about certain subjects as opposed to WANTING to and doing so because its necessary and right, however (and understandably) uncomfortable it might be, do they have a right to do so?

I have read at times online people say stuff like "[Insert a particularly sensitive subject] people should not simply believe and act like this doesn't exist", and OK fair enough, but what if people just can't help it? Also, what if people do NOT necessarily think that "it doesn't exist" but just want to avoid it because for them it may be taboo, does that make them wrong and also culpable and blameworthy etc? Why not just blame the perpetrators in certain offenses or people who said/did something wrong etc, and also, why do such nuances and distinctions exist in SOME matters but not in OTHERS that may ALSO be considered wrong, hurtful and/or even ILLEGAL by law definition-wise, and also immoral under say dictionary definition? And what about some people who are NOT say bigoted and prejudiced but just not entirely AWARE of certain issues etc. Heck, what about some people who think, and not necessarily in bad faith but incorrectly, in ways that are more OPTIMISTIC and hopeful rather than just expressing anger and outrage?

I also notice that indeed, we, in humanity, often look at many different issues, including wrong ones, DIFFERENTLY and that even murder, for example, is looked at differently than some issues. Indeed, certain matters we are sensitive to and fear more, and sadly, there are opposite extremes and whatnot.

But yeah, if someone doesn't feel like talking about something and doing so directly, is that alright or do we have to prove them wrong? Thank you.