It is always infuriating when characters on TV shows fail to share pertinent information with each other that would be blurted out instantly in real life. English Teacher Guy doesn't feel like mentioning to anyone that the dead are coming back to life now? Even when his ex-wife asks him point blank what he knows? "Ive seen what it can do, and what it can't..." very cryptic and dramatic and all that but how about just sharing some details? Oy vey!
Same when no one could explain to the sister why she couldn't go sit next to her sick boyfriend... for ****'s sake, a simple "people are turning into zombies" would have sufficed. Is this some alternate universe where the word zombie doesn't exist?
Also the protests struck me as stupid - the police brutality thing is a big issue in our real world today, but there would be 24 hour, wall to wall media coverage of people turning into monsters and not dying until they get a bullet in the brain pretty quickly, which would be the end of the protests.