Full disclosure: I got into a little physical altercation yesterday with the Chicago police and lost my notepad in the scuffle. We’ll get to that, but for now please forgive any errors in the timeline. The first march organized by the March for the Democratic National Convention was set to take off from Chicago’s Union Park at 1 p.m. Reporters were invited to get there at 7 a.m; I have no idea if any did, but at 10:30 a.m. a friend texted to say, “Union Park right now is very underwhelming.” This seemed to be the consensus going in; that the anticipated 30,000 marchers would come nowhere near,…