It’s been a week. As a TV writer and Los Angeles Unified School District parent, I’ve bounced between WGA picket lines, school pick-ups, and fighting Proud Boys. I wasn’t expecting to be here. The bewildered retired librarian I chatted with outside the Glendale Unified School District Board meeting last Tuesday also wasn’t expecting it. You’re probably not, either. Welcome to the new battlefield in public education: fighting violent paramilitary groups outside of…