The New Generations

The second book in the Generations series- After the generation starship, Hope, returns to Earth after establishing a colony on Proxima-b, the ship is destroyed in a war with scavenger gangs. They must integrate their remaining survivors with the only remaining city on Earth - Can they meld their philosophies and religions? Can they survive an attack just when they are working these things out? Who is behind this vicious attack? Will the Generations of Humans on Earth find a way to survive?