Why make the speech about crime? How is going hard on crime going to win over swing voters when it's at a historic low??
He's speaking to the GOP base, who believes that crime has gone up, unemployment up, deportations down, and the stock market down under Obama even though the opposite is true. They live in an alternate reality.
TBF, Appalachia and a lot of small towns have been hit pretty hard, and that's where a lot of the base is from. Not necessarily an alternate reality, just not indicative of the full national picture.