When I was a student, a Professor who taught and wrote extensively on First Amendment Right (Freedom of the Press) once put into practice his passion about the issue. The context was the on-going debate about the need to put restrictions on The Simpsons show as it was potraying values considered to be out of sync with American values. Irrespective of his personal views on the subject in question, Prof. took it upon himself to join the symbolic protest against any ban or censorship of Simpsons. He, without exception, wore formals to class. One day he wore Bart Simpson t-shirt to work.
There are many such examples in our surroundings where a higher principle takes precedence over personal views.