You are completely correct. When an instructor basically uses the classroom to 'preach' their own point of view, the students are smart enough to know they need to parrot those views if they want to get a good grade.
If a student disagrees openly with that instructor they risk destroying their grade point average. This affects their college eligibility. Is it any wonder that our colleges and universities are filled with left wing nutcases? If they grade their little minions with the 4.0 and those who disagree with 2.0, a conservative thinker is at a disadvantage. Conservative students have to go along to get ahead. They have to hide their opinions. This instructor should look in the mirror if he wants to see who is like Hitler.
Thanks for your kind words to me on this thread! :)