Unity hasn't done squat for the French and British, who seem to be experiencing an accelerating rate of such attacks, and will definitely experience more as all their "citizens" return from Syria.  After every attack we get the flowers, and teddy bears, and "don't give in" and "we are not afraid" propaganda. 

And then we find out that every one of the terrorists was known to police.  And nearly all belong to a predictable demographic. 

Sorry, but forgive me for losing faith in our government's desire to protect us. They care more about optics and feel good messages than the reality of what is going on in the world today.