Thank you for your answers.
When I asked about the general population knowing about the existence of intelligence in outer space, I meant like a mass landing or public announcement on a grande scale.
I have known, in my own way , about the existence of "aliens" an dhave been both terrifeid and curious for many years. I have often wondered about that reaction of the population if there were to be a mass landing or something me other form of solid, undisputable proof.
I have to believe the first kneejerk reaction would be violene...sadly, that's our answer to what we do
not understand.