Merely a random ugly down day or a market correction unfolding here?

Today's slide deck: https://bit.ly/37U761U   - 

Today we look at movers and shakers in the commodity market, particularly iron ore, which is tearing higher at an accelerating pace lately. But with so much focus on the US megacap stocks and suddenly the worst day for markets in nearly a month, we spent considerable energy looking into what drove the sentiment shift, in particular the new move by US anti-trust authorities against Facebook. The latest on Brexit, thoughts on the ECB and more on the call. Today with Peter Garnry on equities, Ole Hansen on commodities and John J. Hardy hosting and on FX.