As kind of a real-life example, I'm struggling to write a description of the Crusades from the point of view of a Catholic pope. I know that through the Crusades, the Christians basically "rescued" the city of Jerusalem from the so-called "filth" that inhabited it. (Note: Please do not be offended by my use of the word "filth")
You might say there's a tip-of-the-tongue phenomenon going on here.