Tribalism, after all, is part of our evolutionary DNA. The need to identify with a group, to belong and commune with like-minded people is not only biological, it's what has helped motivate our desire for and devotion to all kinds of important cultural institutions, from organized religion to sports fandom.

Forming communities - even and especially ones based on strong loyalties and allegiances - is in our DNA. It's what's kept us alive for millions of years.

We are more and more defined not by our friends but our political enemies - collecting them like badges of honor.

S.E. Cupp Quotes