A false-flag incident involving missed shots fired from the sixth floor. By 'pro-Castro Cubans'. With whom Mr. Lee Harvey Oswald is playing the role of confederate.
OK. What ingredient would put the glace cherry on just such a false-flag provocation? An unmistakable political
signature.
Mr. Oswald signals from the doorway to the passing Pres. Kennedy, using a small FLAG. Mr. William Greer, the driver, is watching in the bespoke second mirror for Pres. Kennedy's pre-agreed counter-signal (brushing of hand across his hair). His inattention to the road will lead to his almost running the limousine into the curb..........


As soon as Pres. Kennedy has passed the building, Mr. Oswald leaves the steps with a long paper sack in his (other) hand. He leans over (or kneels down, whatever) and takes a BANNER out of the long paper sack. We catch the tiniest glimpse of his head in Wiegman:


His strange behavior (unfurling a banner) is noticed by a couple of people out in the line of spectators in front of him:



Then.............