It was two or three days ago that I had that same feeling/realisation of oneness, and the same realisations as you. The difference about this experience was that I could 'feel' it a little, it was a good feeling. Then I started thinking about the truck driver in Nice, trying to reconcile the oneness I was feeling , thinking me and the truck driver are one, but it didn't really work so well.... 
Maybe I perpetrated such heinous acts in a previous life, I don't know. But a new experience I'm having these days is whenever I think about something, and I hit a wall, then the appropriate quote comes into my thought, so the quote that came to me when I was having difficulty keeping that feeling of oneness was this one:
Gem, I 'do' feel that since we are each others' mirrors, that you should mirror others accurately. Honesty is important. Becoming a walkover falls kind of in the martyr category I guess. But again, this is a tricky one, because mirroring someone accurately who exhibits nasty behaviour usually just escalates matters. Perhaps staying kind and friendly in the face of such treatment is a more effective mirror to them in the long run... I'm still working on that one myself. I think it has to do with non-resistance, when you resist someone's behaviour you act differently towards them than when there is no resistance, so it has to do with acceptance/non-acceptance.
Anyways, this is also one of those inside/out overhauls. It starts on the inside and gradually changes outside actions. Never the other way around. Acting like a saint when there's a storm raging inside of you isn't the way.

Maybe I perpetrated such heinous acts in a previous life, I don't know. But a new experience I'm having these days is whenever I think about something, and I hit a wall, then the appropriate quote comes into my thought, so the quote that came to me when I was having difficulty keeping that feeling of oneness was this one:
Quote:Questioner: The answer to this question probably has to do with our distorted view of time, but I see Wanderers in this density who have come from fifth or sixth density. [It] seems to me [that they] should already be of a relatively high degree of adeptness [and] must follow a slightly or somewhat different path back to the adeptness that they previously had in a higher density and get as close to it as they can in third density. Is this correct?
Ra: I am Ra. Your query is less than perfectly focused. We shall address the subject in general.
There are many Wanderers whom you may call adepts who do no conscious work in the present incarnation. It is a matter of attention. One may be a fine catcher of your game sphere, but if the eye is not turned as this sphere is tossed then perchance it will pass the entity by. If it turned its eyes upon the sphere, catching would be easy. In the case of Wanderers which seek to recapitulate the degree of adeptness which each had acquired previous to this life experience, we may note that even after the forgetting process has been penetrated there is still the yellow-ray activated body which does not respond as does the adept which is of a green- or blue-ray activated body. Thusly, you may see the inevitability of frustrations and confusion due to the inherent difficulties of manipulating the finer forces of consciousness through the chemical apparatus of the yellow-ray activated body.
Gem, I 'do' feel that since we are each others' mirrors, that you should mirror others accurately. Honesty is important. Becoming a walkover falls kind of in the martyr category I guess. But again, this is a tricky one, because mirroring someone accurately who exhibits nasty behaviour usually just escalates matters. Perhaps staying kind and friendly in the face of such treatment is a more effective mirror to them in the long run... I'm still working on that one myself. I think it has to do with non-resistance, when you resist someone's behaviour you act differently towards them than when there is no resistance, so it has to do with acceptance/non-acceptance.
Anyways, this is also one of those inside/out overhauls. It starts on the inside and gradually changes outside actions. Never the other way around. Acting like a saint when there's a storm raging inside of you isn't the way.