Takfir is generally translated as "departure from Islamic practices", usually in the sense of ceasing to be a Muslim
Hijira literally means "journey". The Qur’an uses the word Hijra to mean moving from a bad place or state of affairs to a good one
Since one of the main tactics of the group is to stop performing Islamic practices in order to better blend into non-Muslim societies, and not attract attention, an alternate translation of al-Takfir wa al-Hijra would be
I am assuming Hinrichs was caucasian. I would think this would be the type guy AQ or any other terrorist org would be looking for. He wouldn't profile out based on past experience.
It's crazy, when I was in college they used to check us to make certain we weren't carrying in booze, now it bombs. People say the good old days are just a fiction, but in this case I'd have to disagree.