Since futures market positions nearly never end in delivery of the underlying product (silver), the effect on the price of their existence can be subtracted from the spot price that includes this future/forward bogus "demand" (that actually is attempting to lock in a profit / to hedge).
On 21/04/2015 (end of day) the net total of this bogus "demand" amounted to 33836 positions of 5000 ounces. Comparing buying/selling data with price trend delivers an amount ounces per price US dollar: 70 Moz. 33836 x 5000 = 169 Moz, divided by 70 Moz this is $2.4 price dollars.
The price on 21/04/2015 was $16.08, so the "real" price that day is $16.08 - $2.4 = $13.68. That was the 'should be' price of silver that day.
For what it matters, things are like they are, forced/manipulated/whatever or not, despite all the 'should be's'.
Forum talk is bull and bear talk. In any price fluctuation, there is a last sucker buying and a last sucker selling, and both have a text balloon holding 'should be' hovering above their head.