Kuminga has all the reasons to be mad, but I don't know about Clarkson. He is frustrated because of the blocked shot, that's all the reason he has.
Above-the-neck foul, "unnecessary excessive contact" which means Flagrant foul 2. He was ejected because of that.
Technical foul was called on Kuminga and Beasley.
Despite that, Utah Jazz still got the win because of the errors made by the Warriors and missed freethrows in the last seconds of the game.
This kind of scenario rarely happened especially when the game is closed and each team is focusing to win the game but we cannot blame them given the pressure and the way they protect themselves from players that are giving any conscience regarding the way they play just to win a single game. This GSW is good when they want to hurt their opponent secretly on the court, just like what happened in the NBA playoffs last year with Ja Morant. and that's maybe what happen today and both teams' results nearly make some smoke against each other.