When it comes to locations I'm one of those crazy authors who has to see it touch it taste it before I trust myself to recreate it for my readers. Having said that visiting a locked-down pediatric psych ward was the most intimidating research I've ever done - and I've visited maximum security prisons shooting galleries bone collections etc.
The message of Passover remains as powerful as ever. Freedom is won not on the battlefield but in the classroom and the home. Teach your children the history of freedom if you want them never to lose it.