Holy shit, someone is in need of some serious lessons in designing readable charts.
It took me a while to decipher it, which requires a close reading of the Chart Legend. After doing a little investigation, the chart was created by a member of a conservative site called The Last Refuge, which has intensively followed the controversy. While they are mainly reliable, the were at least a few prior errors on Ferguson that make me reserve judgement on this chart.
None the less, the poster "DumbScribblyUnctious" has tweeted it to PBS who is reviewing it, apparently to revise their own chart.
https://twitter.com/ScriblyUnctious
The most important take away from the chart is that it illuminates the complexity of issues like "hands up" (e.g. all the way, half way, palms up, palms down, etc.).