I like Falling Skies a lot too. It obviously is going toward the "Not all aliens are alike" like so many shows have tried to show similar messages.
I remember back in the early days of video-tape rental (years before DVDs) I was in a rental store and all of a sudden 2 cops walked in and approached 2 black guys, and a third black fellow had one of the cops approach him and I heard him say "Just cause I'm black don't mean I'm with them!" and it was a pretty striking moment to me.
Just a year ago or two ago, my neighbor's grand daughter was killed in a car accident - she was a recent graduate of a local high-school and resided in a predominantly black area. There were well over 200 people turned out.
My wife and I attended the viewing and frankly were the only white people there. I felt out of place, eyes looking at us wondering what connection we could possible have with a girl 35 years younger than us and more than apparently of a different race. It was another moment of realism, that I felt, if only for a few minutes how a black person must feel in an area predominantly white, every day.
We live in a very diverse area, seeing people of all races is common. But for a moment I was a minority and it felt strange.
BACK TO FALLING SKIES - I can see the distrust and hatred that needs to be quelled in order to let trust have a chance to work. In the real world, it's like an timid pet laying prone letting you rub its belly, everything in its genes tell it otherwise. That is what the humans need to do, expose themselves, putting all their cards on the table - but frankly they (as a species) have little to lose: humanity is all but wiped out.
Interesting to think a bit deeper into some shows. I think that was something Alcatraz was missing - it had great shows, a story line of old and new inter-tangling often surprising us, but it failed (sadly) to pull off the wow factor to get it back another season.
I have a feeling Falling Skies will go the way of Jericho unless it keeps evolving without jumping the shark too badly. For some reason, few people remember the series SURFACE which I was very saddened to find it was not coming back after possibly the best seasons cliff-hanger ever.