In the midst of a Knicks beatdown, Mitchell Robinson wanted to administer one of his own. The Knicks center was ejected in the second quarter of Thursday’s 140-89 massacre for going after Hawks guard Dyson Daniels, and video taken from the stands at State Farm Arena in Atlanta is even more chaotic than what viewers saw on TV. Robinson tried to fight through anyone and everyone on the court, using every last inch of his 7-foot, 240-pound frame to muscle his way toward Daniel in a scene that did a number on a crowd with a heavy Knicks fan bent. “Oh my god,” one onlooker said before letting out a scream. “I’m terrified.” Other simply cheered for some sign of life from a Hawks team on the wrong side of a 72-22 score. The entanglement with Robinson and Daniel began with 4:39 left in the first half, following OG Anunoby’s free throw that made it a 50-point lead.…