What would make you believe Aliens visit Earth
youtube.com
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Now if you want to convince me that aliens visited here millions of years ago, I might be on board. Ancient Sumerian texts paint a fairly clear picture of the "Sky People" and their tampering with DNA often represented as the tree of life covered in the Book of Enoch, somewhat represented in the Torah and missing from the Christian bible covers the sky people a little bit as well. It is missing many of the scrolls however.
Until such time, I will assume its the same clever but childish games that military organizations and governments have been taunting each other with since WWII. i.e. the microscopic screw competition between the U.S. and Japan, the chirpsounder noise floor comms between the U.S. and the Soviet Unition, the typewriter vault incident between U.S. and Russian intelligence, and so on. I don't have links to any of these, sorry.
Regarding the live broadcast on every channel, uninterrupted...
Have you ever heard of Project Blue Beam?
Them deceitful devilz!1!!
jk
I also imagine they would be bonded by morality similar to the way humans are and want to help us and the planet generally if they knew we existed. (More bellicose civilizations are less likely to achieve interplanetary travel before they blow themselves up.)
What is the minimum evidence you would need to think Earth is being visited by Aliens?
1.) Major peer reviewed publication (Nature, Scientific American, etc) publishes an article about this
2.) Several skeptical science communicators (Michael Shermer, Neil DeGrasse Tyson, Bob Novella, etc) publicly announce it
3.) The heads of 3 G7 countries make a public announcement.
If these happen, I'll believe. Too strict?