Dylan never referred to himself as a 'protest' singer. He wrote songs that projected a different light on how he saw things. Phil wrote songs that were often harder hitting, many of which have been mentioned previously. When Pat released 'Songs That Made America Famous' most people didn't see the songs on it as protest. Buffy wrote many beautiful songs and some carried an anti-war spirit, Universal Soldier being the most well-known I think. Collins did a few also. Baez and her brother-in-law Richard did their share, and so did Odetta, Seeger, et.al. However, many of the people I see who have mentioned them have failed to explain what the term 'protest singer' means, so I suppose we could mention Perry Como too.