David Avlon : Pew study says politics affects Americans more than race , class , age , gender . He says it 's bigotry , a learned ideology profoundly alienating Americans from each other . He says GOP support of social safety net , environment way down , Democrats about same . Avlon : But over the past 25 years , the split on basic values between Republicans and Democrats has skyrocketed . Politics undermines core belief of e ##go unum .
David Avlon : Pew study says politics affects Americans more than race , class , age , gender . He says it 's bigotry , a learned ideology profoundly alienating Americans from each other . He says GOP support of social safety net , environment way down , Democrats about same . Avlon : Politics undermines core belief of e ##go unum .