Falling Skies looks more and more like a low budget drama right now. So it's a human witch hunt thing that was going on.
There was another group of people after the Mason family before.
Where the hell are the aliens? Why are the aliens so dirty? Where is the whole alien technology?
The show has been a disappointment from the start.
I'm not saying it's a bad story. Watching a show that has aliens would just set your expectations on some alien spaceships, high tech gadgets. Things like that.