First analysis of this picture
The picture has the figure of the cop almost too much in relief (i.e. the foreground cop and the cars and figures in the center of the road and the crowd with the buildings in the background are in sharp focus).
The lens doesn't seem to be a wide angle and it was impossible to overtake the physical limit of that time films ; the light of that day did not allow maximum closed diaphragms (lowest f number).
The same cop has a kind of "not regular" strap on the left shoulder, usable nor for portable radio nor for long weapon.
Over the hat of the cop, near the Alfetta hood, there is a little strange black mark.
The light of the Sun on the right shoulder is impossible at that time in that place.
So it seems that they have deleted tie and white shirt in order to look him like an operative ("della Volante") cop, like the other one in the background,
In the same picture even the Alfasud plate, a service car, is covered by a "phantom" cop.
The Mini Cooper rear back is masked with a black shadow mark.