Don't confuse economics with politics.
So here goes part of your explanation without getting political, the us dollar is declining in value, investors are seeking a hedge against a falling dollar. When they do this they flee to tangible things such as commodities (gold, silver, oil, nat gas, wheat, corn, pork bellies, orange juice, and metals of all types) because there is safety or less risk in commodities than other investment vehicles such as currency i.e. the dollar. So even though demand is down for commodities due to the overall depressed economic conditions the prices for commodities is rising due to demand from investors hedging for risk aversion. This will continue to happen as the dollar weakens further, and or investors become more nervous as they foresee additional headwinds going forward.
That is one reason your going to see more of it for sure heading into the next several years. Probably will not matter much after a certain point because either out of fear, uncertainty (both) and the fact it will take your whole check to pay bills because your operating cost will soar at the same time your currency will collapse or near collapse so you will not be buying knives anyway.
From an economics perspective that is part of the problem, and there was nothing political in that answer just plain good old fashion economics 101 and 102 which for the ignorant among us that comes out of an economics book not a poly sci book and is taught in Micro and Macro Economics classes at institutions of higher learning not in political science class.
ALSO TAUGHT IN MICRO AND MACRO ECONOMICS IS THE FACT THAT MONETARY POLICY DOES GET MADE IN WASHINGTON, SORRY THAT IS JUST THE WAY IT IS. The guy didn't start name calling or hollering about parties he stated a fact that has to do with part of a legitimate and correct answer to the question asked by the OP.