You are correct.  We all live in "bubbles" that reflect people with the same beliefs as we do.  This is especially true in the suburbs.  While the subdivisions are not physically gated, they are gated by income.

We all hear the words from a politician and hear them through our own filters.  We try to believe that what they are saying is in accordance with our beliefs.

We do not want to examine evidence (facts) that might contradict our opinions.  When Trum said that he would bring jobs back, who wanted to listen to economists that described how difficult and unlikely that was.  This is especially true for the coal miners.

We have to learn how to break through the noise fog.  This does meant listening to those who don't agree with you.  But try to find common ground in seeking a solution.