The new film Battle: Los Angeles represents a Hollywood version of extraterrestrial life that mirrors the views of Donald Keyhoe and those who have followed him (just about every modern pro-ETH researcher), which is to say the people who would have us believe that aliens are only slightly more technologically advanced than we are, and basically act with the same motivations as us.
This modern version of the "aliens-as-us-in-flying-saucers" meme, while admittedly more nihilistic and violent, is more or less the same as classic 1950s sci-fi epics like The Day The Earth Stood Still.
For the most part, the views that Hollywood have given us of aliens mirror those of the pro-ETH UFO research community. What once might have seemed imaginative has long since been revealed as wholly unrealistic from a scientific sense. Hence the term "science fiction", which applies equally to Keyhoe-ian UFO research as it does to Hollywood blockbusters.
But every now and then, a film comes along that offers a different and possibly more realistic view of what an encounter with an extraterrestrial intelligence will be like, and what it will mean for humanity. Here is one of my favourites - Contact:
The film wasn't perfect, of course - few films ever achieve that standard. But the issues it raised, and the way it raised them, provide a better glimpse of what might lie ahead than a film like Battle: Los Angeles, or even a classic like The Day The Earth Stood Still.
For that we can thank Carl Sagan, who might not have had much use for the UFO phenomenon, but had a much better grasp than do most UFO researchers and Hollywood films in terms of what to expect from an encounter with an extraterrestrial civilization.