So why wasn't Wiegman's potentially-plot-blowing film seized (somehow)
by the plotters? Or couldn't they risk offending the National
Broadcasting Company?

Of course, there are many CT-Kooks who think that Wiegman's film DOES
capture elements of "The Conspiracy"....via the so-called "smoke"
that's drifting down from the Knoll here......

http://216.122.129.112/dc/user_files/3448.jpg

http://www.geocities.com/shotonelm/Zapruder/weigmansmoke.jpg

.....Of course there's no proof that that is "smoke" from a rifle shot.
And, furthermore, the idea that THAT MUCH smoke would still be
lingering near the Knoll several seconds AFTER the shot was fired seems
a tad far-fetched (as is the idea of these "pro" assassins even
utilizing ammunition which produces THAT MUCH SMOKE in the first place,
to potentially be seen by gobs of witnesses and blow the whole Patsy
Plot/Conspiracy Plot).

There's also the CT-Kook assertion (via some CTers) that has a person
riding in one of the press busses (at the REAR of the motorcade) who
claims that "smoke" ("gunsmoke" per the CT set) was STILL visible near
street level as the bus passed through Dealey Plaza....which HAD to
have been at LEAST a full minute (or even two minutes) after the
shooting occurred. Come now.

Such an assertion (if true re. "smoke" still being visible MINUTES
later in DP) actually only serves to bolster the idea that ANY "smoke"
that was seen by Holland, Dodd, etc., had come from some OTHER source
other than rifle fire.