Good point.@The alchemist
It's very interesting how the age of mass information also coincided simultaneously with an age of mass sensitivity. This is somewhat to be expected if observed properly.
Identity politics is a serious issue today only because of a lack of identity and knowledge of self. Therefore when someone formulates an identity whether religious, political or social and they feel it expresses their own sentiments best, whether through a journey of self discovery or indoctrination, it becomes absolutely sacred. Holier than the holy grail. Anyone who pokes at it or expresses an opinion that goes against this artificial ideology is the Devil.
But because the ideology is artificial (therefore insecure), a person might not be able to answer the difficult questions or begin a journey to explore the foundations of their acquired ideology/identity. So it's much more comforting to be near those who validate your world view which creates this filter bubble despite living in an age of information.