History, or what we understand as 'popular history' is quite often a reflection of the here and now.
I'll give you an example. Academic researchers researching dusty archives are all after one thing; and that is funding to enable them to do academic research in dusty archives. Where does the money come from? - well a variety of sources but in times of recession it is really hard to come by, believe me. As a researcher you will encounter gatekeepers to this funding and they will quite often narrow the parameters of your research to reflect their own interests... so, do you see where we are going with this?
If you're thinking 'He (and it usually is a 'he') who pays the piper calls the tune' - you're not too far from the truth.
I'll give you an example
In 2014 Mr Cameron in the midst of the worst recession since the Great Depression, in his wisdom is spending £50 million of your cash on events to commemorate the 'Great War' or WW1 as it's now called. From a personal perspective I'm of the opinion that this is a war that should never be forgotten and it could be money well spent - but it should be spent for the right reasons. I'm quite sure that this money will be spent in evoking a 'we were all in this together' type national unity version of the history of the first world war - there certainly will be little, if any, discussion of crtical narrative of the history of WW1.
So, in general, you get the popular version of history the powerful pay for - real history is often done by learned amateurs with little money but lots of love for the subject.