The teacher's lawyer talks about First Amendment rights to free speech but free speech has never meant speech free of consequences. Even aside from laws against libel or extortion, you can insult your boss or your spouse only at your own risk.
Unfortunately, there is much confusion about both free speech and academic freedom. At too many schools and colleges across the country, teachers feel free to use a captive audience to vent their politics when they are supposed to be teaching geography or math or other subjects.
While the public occasionally hears about weird rantings by some teacher or professor, what seldom gets any media attention is the far more pervasive classroom brainwashing by people whose views may not be so extreme, but are no less irrelevant to what they are being paid to teach. Some say teachers should give "both sides" -- but they should give neither side if it is off the subject.
Academic freedom is the freedom to do academic things -- teach chemistry or accounting the way you think chemistry or accounting should be taught. It is also freedom to engage in the political activities of other citizens -- on their own time, outside the classroom -- without being fired.
Nowhere else do people think that it is OK to engage in politics instead of doing the job for which they are being paid. When you hire a plumber to fix a leak, you don't want to find your home being flooded while he whiles away the hours talking about Congressional elections or foreign policy.
It doesn't matter whether his political opinions are good, bad, or indifferent if he is being paid to do a different job.
Only among "educators" is there such confusion that merely exposing what they are doing behind the backs of parents and taxpayers is regarded as a violation of their rights. Tenure is apparently supposed to confer carte blanche.
The Colorado geography teacher is not unique. A professor at UCLA wrote an indignant article in the Chronicle of Higher Education, denouncing organized efforts of students to record lectures of professors who impose their politics in class instead of teaching the subject they were hired to teach.
All across the country, from the elementary schools to the universities, students report being propagandized. That the propaganda is almost invariably from the political left is secondary. The fact that it is political propaganda instead of the subject matter of the class is what is crucial.