I enlarged the paper Griffing was holding up to see what
The top two words on the tablet are not legible. The bottom sentence: "Kay McVay Reaches Across Table to Grab Kaiser Chick by Throat"
Kay McVay is a negotiator for the California Nurses Association. Of course what's on the tablet is just a cartoon. There is no record that McVay physically assaulted anybody the way Griffing did. But a violent choking cartoon is definitely something a leftist goon would draw.
See a photo of the newly-trained Alinskyite nurses holding up their certificates after the Griffing class here.
In case you missed it, here is the video of cartoonist/thug Mike Griffing knocking the camera out of a GOP supporters hands, then returning to push/hit him.