Who is the enemy?
I feel like as humans we tend to label a group or a person as "the enemy" and proceed to disagree with everything they say or do regardless of merit. Republicans and Democrats, atheists and believers, pro-life and pro-choice, etc. etc. I mean really, anything the NRA says is instantly ridiculed in some circles and anything President Obama does is destroying America in other circles. I've seen this in families, even.
So who is the real enemy here? Are there such things as enemies in the end? I'm not just talking politically, but in all phases of life. Is there anybody that should be labeled as an enemy?
It would also be interesting if you give examples of kinds of enemies you've seen other than those listed above.