nescience
So many world leaders are completely nescient regarding the past.
It is most likely that the critics are either nescient or oblivious of the subject.
Anyone who lacks knowledge about anything can be said to be nescient about it.

SMART Vocabulary: related words and phrases

Knowledge and awareness
acquaintance
alertness
as every schoolboy/schoolchild knowsidiom
astuteness
at/in the back of your mindidiom
experientially
familiarity
firsthand
general knowledge
gnostic
lived experience
metacognition
nescience
nod
off someone's radaridiom
omniscience
street smarts
theory of mind
visual literacy
witting