When studying history, one needs to keep in mind that anachronism is a ever-present danger in such a study. One is always influenced by the concerns and mores of the day.
However, these concerns and mores do not necessarily carry over into a past time period. For example, people in the past may have been concerned about appeasing a noble or a king as the ruling system was different back then. So, the modern day democratic ideas should not be forced upon the past period as it simply was not a real concern back then.