Two head stamps during last weekend

Two head stamps by football players last weekend. How do you think of those situations? On purpose or just an accident? Please let me know your thoughts.

The first situation is at the Spanish derby between Real Madrid and Barcelona with referee Alberto Undiano Mallenco. Busquets stamps on the head of Pepe. The referee was close by, but had many things to look for. Would you give Busquets a red card?

The second situation is from the Europa League. Carlos Tevez runs towards Neto. The Fiorentina goalie reached the ball earlier, Tevez jumped, but landed on the referee’s head. A refereeing colleague on Facebook said: “Should have sent him off; it is clear that he could have kept his legs up and cleared the GK but chose not to. Brutality.” What would you decide?