First viewing on the day, I was thinking red, but then on review - I think he (just about) lands on his side, so YC if you are going on the tip tackle memo. But...
.. it wasn't a tackle. There was also no lift, so it can't be a "tip tackle". It was however, very dangerous, and I think Johnson looks up at Kearney, before running through him. He certainly isn't focused on the ball the whole way through the act, and had looked at Kearney, so knew where he was. Dumb & Dangerous act, and I don't think anyone who have complained if it was red.
I would probably have gone red, and have given red in the past for similar actions. I expect the citing officer to take a very close look at this...