I've heard of Birkenau but not often and not as much as Auschwitz. I grew up in that era and the images have haunted me all my life. That's why I give money to the Fellowship of Christians and Jews to help feed elderly Jews in Russia who would otherwise starve if organizations like FCJ didn't help them. I feel I have to. It's not a duty by any means but I know God wants us to help the Jewish people and it's an honor to be able to do even this little bit.
Why so many elderly people in Russia (Russian, Jews and others) were starving? Because of the reform minded/free market oligarchs like Khodorkovsky who looted the country. Now thanks to Putin the old retired people can eat a little better.