There is a term that describes people who think that all history began the day they were born. In other words, they think that we have always had income tax, always had social security, women and black people have always had the right to vote, etc. Their only frame of reference for political or historic events is what they grew up with, and are unable to grasp that things have not always been this way. Any ideas?
"Their only frame of reference for political or historic events is what they grew up with." :
sheltered –Urban Dictionary
A person who has been secluded from the darkness and evils of the world. Such as war, murder, suicide, abuse, cutting, rape, amputees, disease, drug abuse, gangsters and mafias.
A person who is sheltered is usually naive, likely religious, and does not know how the world works in reality.
Sheltering your children is a terrible thing and unrecommended. It promotes unawareness and makes them more vulnerable to be taken advantage of by corrupt, evil and manipulative people.
The majority of people in America are pathetically sheltered.
The hyphenated word history-challenged (definition 2 below) or the phrase historically challenged (definition 1/2 below) should help here.
1. a euphemism for disabled (usually preceded by an adverb): physically challenged.
2. deficient or lacking (usually preceded by an adverb or noun and used facetiously): ethically challenged; math-challenged.
Examples using "historically challenged":