It's very trendy for indie RPGs to talk about protagonists at the moment. I have a big problem especially with Acts of Evil where minor characters who only react to PC actions are supposed to emerge as 'protagonists'. This term directly contradicts the common definition:

A protagonist is the chief figure in a drama whose actions are the primary focus of a story (Wikipedia)

Of course in literature or film there are protagonists. The entire story is written around them - from start to finish.