Ignored is the fact that market was up 150% in the preceeding 12 months of its top. It's an extremely volatile market and a large selloff would be expected, probably inevitable. It's still up for 2015. Not exactly a crisis.
The underlying causes of the 08 crash in America were never addressed (consumer debt, real growth), and the Fed's interest rate games and QE only served to force investors into riskier and riskier assets, which only hurt productive real investment. All the valuation and volatility metrics have been screaming louder and louder for a long time now.