I thought Owen had it bang on, it could have gone either way and even if the ref was torn, Felipe made the decision for him. You could argue a yellow for the challenge and a yellow then for dissent would be fair.
The ref did it by the book, whereas others would have let it go as a yellow - if Mane gets an Achilles injury because of a deliberate attempt to bring him down aggressively, then our opinion suddenly swings the other way.
Are we basing punishment on how damaging the violent conduct is? All this grey area, using your discretion bullshit is why you see dumb decisions like the Pickford vs VVD challenge last year. No one would ever know if the intent was there, but the rash and damaging challenge off the ball has the same potential for injury. Griezmann got sent off for a high boot, so did Mane, the intent is debatabe but the decision arguably more clear cut. I don't get the difference.