movie with aliens kidnapping kids with one dying cause of acid

A family living on a farm finds mysterious crop circles in their fields which suggests something more frightening to come.

signs is a sobering continuation of Benning’s career-long interest with the written word as image, text as vision: a silent parade of stills showing dozens of cardboard signs asking for money, food, and kindness.

Will Radford is a top analyst for Homeland Security who tracks potential threats through a mass surveillance program, until one day an attack by an unknown entity leads him to question whether the government is hiding something from him... and from the rest of the world.

When astronomers detect a transmission from another galaxy, it is definitive proof of intelligent extra-terrestrial life. The world’s population waits for further contact with bated breath. They do not have to wait long. Within days, mankind is all but wiped out by a devastating attack; pockets of humanity are left in an eerily deserted world. As aliens hunt and kill those left alive, the survivors ask a burning question – who are these attackers and why are they hell-bent on our destruction?