After months of brewing tensions, the Writers’ Guild of America officially declared a strike that went into effect Tuesday. The impact was instant—writing rooms for popular shows including ABC’s “Abbott Elementary” and Netflix’s “Cobra Kai” shuttered, late night shows and NBC’s “SNL” will air reruns, and CBS postponed its fall schedule reveal event originally planned for next week. In addition, protesters have formed picket lines outside of studios and completely obscured the entrance to Peacock’s NewFronts presentation this week, an occurrence anticipated to impact presentations during the TV upfront week beginning May 15.