I don't presume to tell you what standards you should use to decide what is appropriate to post on these forums.
However, political overtones can be found even in the official Sierra games. For example, in QFG1, one gains points for releasing an animal from a trap. That conveys a very strong political viewpoint. The livelihood of many people depends on trapping animals, and releasing an animal from a trap deprives those people of their livelihood. Many people, myself included, can reasonably take offense in that scene. Regardless of what side you take in this issue, it is clear that a very strong political viewpoint is being conveyed.
So you should be careful to apply your standards evenhandedly.