CORed
Penultimate Amazing
I voted probably Oswald acting alone. I actually don't think there's much doubt at all that Oswald was the sole shooter of Kennedy. There is a little bit of doubt in my mind as to whether he was acting alone or was part of a conspiracy, due primarily to Ruby's subsequent assassination of Oswald. OTOH, there is no real evidence supporting the notion that Oswald was part of a conspiracy, and if we assume that Ruby was part of such a conspiracy, it raises the question, if they (whoever they might have been) trusted Ruby not to talk but not Oswald, why not simply have Ruby kill Kennedy?