It is not a simple matter of "ideological intent". The left's approach to history is pure religion based on their own myths. One writer or another may attempt to give some preference to one person, or set of persons, or one event or set of events to lift up someone or something they favor and/or to downplay, soften, reduce the exposition of one person or set of persons or one event or set of events to the detriment of someone or something they do not favor. The left invents facts, motives, personal thoughts, personal attitudes, personal conclusions in historical figures to produce a wholely non-factual overall view of the history they portray. They can say what they want about, how "it is only 'fiction', but they do not believe it is "fiction" it is the truth as they believe it - facts or no facts and unlike most works of fiction it is their clear intent that you believe their claims of "fiction" are just a wink and a nod, and accept that fiction as gospel truth.