Mill's "Vindication of the Rights of Women" and "On liberty" are good examples of arguing for those positions before they were mainstream.
Vindication of the Rights of Women was by Mary Wollstonecraft, and from well before Mill wrote The Subjection of Women. Still, Mill's views were certainly, as you say, radical for his time (and also more radical than those in Wollstonecraft's essay, if I recall it at all accurately).
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Of course, for "every Monday", the last one should have been dated July 22-28. *cough*