I don't want to go into all the details as some readers may have yet to see it, but I couldn't help but feel that the movie conveyed a sense of evolution in disclosure being taught to the public through Hollywood, basically taking us to the next level of understanding - that aliens created the human race. The movie also leaves many thinking about the deeper subject - Who is our 'maker' and our Creator? When this truth is revealed, does it destroy our faith in God?
It's these questions and the confirmation of alien existence, that many within government and religious organizations fear would de-stabilize the fabric of society. It is one of the reasons why the Vatican has commissioned numerous investigations pondering the existence of alien life and why the Vatican affirmed in 2010 that "Aliens (if discovered) are still the creation and brothers of God". Still today many question the motivation behind this preemptive statement.
When an alien civilisation is left to evolve over millions of years and perfect its technology to the point it can conquer time and the laws of the Universe itself, the manipulation or creation of life is a simple feat.
It reminds me of the analogy of a child looking after an ant farm - are the ants aware of the child or are the ants too busy to care to see that the child looking in and could destroy them at any minute? If the child simply watches over the ants and protects them for a long time does this not mean one day he could simply decide to destroy them? The core question and explanation we are posed with in the movie, is that one who create can also destroy...
The movie is also not far off the long held belief of some in the UFO community, that humans have been created by aliens or our DNA has and is still being manipulated to some extent. With the long history of abductions, cow mutilations, finds such as the star child and the mystery surrounding the extra information currently found in human DNA it's easy to see why.
If you think about it, movies like this are an essential way to educate and make the public familiar with a controversial topic, evolving their understanding over the years so they are prepared for the inevitable and therefore don't panic when it occurs. Instilling fear of an imminent invasion of a hostile alien race does seem to be the agenda of Hollywood at present, this fear based agenda is what many if the UFO community are concerned about.
The scary trailer: