You know it's bad when the massive declines in markets across the globe causes #BlackMonday to start trending on Twitter.

Meanwhile, the slightly less exciting "Stock Markets" began trending on Facebook.
In case you missed it, the U.S. markets got crushed on Friday, ending the week down roughly five percent. That selloff is continuing this morning with Dow Jones futures pointing to a decline of more than 600 points at the open.
Chinese stocks were also plunging, sinking the most since 2007 with an 8.5 percent decline.
All but four shares in the Stoxx Europe 600 Index fell as the gauge deepened its plunge after its worst week in four years. Germany’s DAX Index sank more than 3 percent, down 21 percent from its peak.