The S&P futures broke down on their (hourly) chart where I suspected it might (red arrow), where the selling kicked in formerly. And now, the price has broken back below its corrective (green) line and is headed back down. Now, let's see how it does with the two regions where the buyers came back in last time to see if they bid it up again or if it blows through those levels, to the downside. https://s3-us-west-2.amazonaws.com/maven-user-photos/seanhyman/fundamentals/IOSU6hIfr0e_ddd3b0bprg/kbIxVG-5rkaBdTh2gPIJqA
Click on the chart to enlarge it.
Since the near-term trend is downward, if it blows through those yellow arrow regions, the selling could intensify.