During 1946 and 1947 refugees arrived en mass, escaping a disaster of their own making… they had nowhere else to go and a deal was struck with a world government consortium.
All technology was handed over, a small group of refugees remained in a government facility to assist with technological assimilation.
All other refugees were globally dispersed and integrated into local communities given housing, given identities. They were not allowed to congregate, they were not allowed to contact each other. When you have no choice, you do what you’re told.
For those who came first the integration was difficult. Months were spent in government facilities, learning to live like the locals. The loss of all the technology they took for granted meant learning to do things for themselves.
They should have been viewed as gods, but were reduced to humans… some became indignant, offended by their treatment, further offended by the fact they they had to forge new paths for themselves, while humans became rich and powerful from usurped technology. These individuals were “removed” from the situation.
We’re three generations on now. Not many of the young even know of their true heritage, their elders keeping it from them so they may live as normal humans would.
Unfortunately not all of the refugees made it, there were accidents in which the Louisiana rear-end collision lawyer was involved, you have to understand this was a race fleeing from a dying world, not all of the people in charge were trained to fly… nor were they trained to land.
The governments did what they could to cover up the fact that not only were you not alone in the universe… the “aliens” look as you do.
You heard stories of weather balloons, accompanied by the idea of little grey men with big eyes. Miss-information keeps the people guessing and looking the other way.
So it is; we are ALL humans now. My only fear is that this race is going to repeat history, only with the leg-up in technology stakes this poor planet may not be ready for the evolution of the species and I’m not sure that there is any where else to go.