I think your topic is good.
Begin with a personal anecdote to get started like an attention-getter. While you may decide to trash this later, it's good to get something down to get started. Plus, if you decide to keep it, the reader will want to keep reading your story. Also, the anecdote will remind you of your own feelings you had during the divorce so it'll be easier to be descriptive.
You can try mapping out where you want to take your topic in a graphic organizer. That way, you can organize your thoughts and see your topic better.
I think the religious conflict is very interesting. Where do you stand on this? Were you on a side too? Write about that and gradually ease into the bigger picture: society and culture.
My best advice is just to start writing. Anything you write can be fixed later, but you just need to start putting your ideas down.
Elaina Grott