...English, history, and political science teachers frequently soap boxed and tried to hammer their views into people. ...
Well, for the poli-sci professors, what did you expect? They are teaching political "science" so they surely have a "political" POV.
As for the English teachers, their trade is the spoken and written word; so naturally they will want a podium, or at least the nearest soapbox to make sure you all can hear and understand their take on the words, sentences, and story structure.
Now on to History - it has already happened, but human nature is to try and spin that information to make a point. The best ones simply say "x" happened on date "Y" which lead to "A", "B", and possibly "C". With the further fact that human history is inextricably intertwined with the politics of when the event occurred with its interpretation colored by the politics of the current moment in time, you will get some of this as a natural consequence of the subjects you are engaged with.
The point of all this obviousness is that there is also something called auditing where you can take a little time to sit through a class and get to know the professor, subject material, and experience that will enable you to determine whether that professor is right for you. College is not like public elementary, middle, and High school where the curriculum and how it is to be taught are predetermined by some rigid policy; rather the subjects taught come from those who are doing academic research into these topics.
Do yourself a favor and take the time to choose both the Institution and the professors you want to be mentored by and stop whining when confronted by the fact that you chose wrongly...