Practice. I've learned it by meditation (specifically paying attention to the whole of your experience), and so have many other people I know.

It entails exactly what you see in the world. Humans trying to come up with some universal good and evil and then fighting each other because they believe their definition is better.

"Morality" in itself is a human concept, like every word in general.

This realization often entails a kind of nihilism too, unfortunately, as a sort of rebellious backlash against any ideas of harmony with others.

Vast majority of people don't want to directly cause suffering to others. Then there's a lot of opinions on how much you "should" (a thinly veiled callback to universal good and evil again) endeavour to reduce the indirect suffering you cause, and also how to define suffering.

Ultimately it's always just people's personal values clashing and best you can do is figure out what your values are, and find people who share them. You can't really force people to value anything they don't - you can only teach it if they are willing to learn. Or you can force compliant behavior despite their differing values - if your value system allows forcing. If your values allow for forcing compliant behavior on others, then you must of course accept that others will try to use force as well. If you don't allow forcing, then you pretty much need to be prepared to die for the ability to live according to your values.

Very much this. Just going for walks is great. Meditation is great.

And people need to stop consuming political content in social media. Read/watch the news, sure. Especially LOCAL news - find opportunities to actually DO something. Do it intentionally, not passively

Letting oneself be constantly exposed to outrage and doomerism is just going to be more incapacitating than activating.

When they no longer feel a desire to argue with reality that they have faced fully (no lying to oneself) and have accepted that everything is temporary.

And they understand that the above is not a call for nihilism and resignation, but inner peace.

Yes, but "people" must include oneself as well. Else it just becomes another people-pleaser mantra.

Not quite. We have the appearance of (what we call) individuals within one single consciousness. It appears to reflect upon itself from what we take to be individual vantage points (people). That is an imperfect characterization though, try as I might. I'm pointing to consciousness before any thoughts - before you think there's a you, separate from anyone or anything. Pure experience, before thinking ABOUT it.

You're actually right on the money. Reincarnation based on certain systems is exactly that, when look at it from it's proper philosophical framework. But you can just pull it out from it's framework, cram it to a completely different framework (like one that believes in individual souls) and then claim it doesn't work.

From the perspective of nonduality, everyone is a reincarnation of everyone, always. It's internally coherent. Also a great reason to practice compassion. Of course people don't super love the idea of being the reincarnation on people they don't like, dead or alive. But that's one of the many reasons nonduality isn't for the faint of heart.

Ritual suicide is very much a thing in certain systems that believe in reincarnation. At some points it seen as a perfectly rational and pragmatic choice, but yes, you need to do it with specific practices and intentions. Not just "well, life sucks, I'll just reroll".

Not saying if you should or should not be jaded but I would ask you: please, please don't give into the jadedness.

I do understand the impulse and I used to be that way myself. But it's something that eats at you more than it helps you. Online you can always step away from the strife and in the offline world you can find truly good and caring people who do listen to reason. I realize it might be easy for me to say but I really don't want to see any more people turn to hopelessness and cynicism. It only helps people who would add more misery to the world.

I'm not the best person to say this and it'll sound weird on this platform but I do mean it with all my heart. I hope you can find enough good in your life to protect it without despair.