You're so right when you say...We can only hope and do our small part! Sometimes it's best to just teach by example.

As we expose ourselves to a more diverse set of opinions I think it's possible to recalibrate and see the larger picture. I guess it all depends upon how deeply down the ideological rabbit-holes a person is. It might be difficult to undo years of brainwashing, which is kind of what the echo-chambers accomplish. All of them use their own brand of spinning stories and disinformation.