During World War II, Hitler sent four groups of saboteurs to the United States to cause mayhem. The saboteurs were poorly trained and equipped, and all four groups were quickly captured or killed. The only damage they caused was a small fire at a Westinghouse plant.

We must be vigilant in the face of evil.  We must resist the temptation to ignore or befriend evil, and that we must be vigilant in protecting ourselves from its influence.