If you notice how price action leads to emotion and emotion leads to price action. A spiral or cascade of sorts with postive feedback loop.
Basically the instigators who control massive money flows or pools can dictate market inflections whenever they choose.
Most of these money pools are segregated to large liquidity markets such as forex or bonds, these markets spill over into other speculative markets such as equities which are relatively low in liquidity.
The banks have just issued a massive sell, with a macro backdrop for rationality. This coming week is important since a long weekend in the US is approaching. Gyrations in the fx markets usually occur over long weekends that volatility spills over to other markets.
I will posting a series of long term charts. To look at what is intimated.