David Luiz was incorrectly sent off after giving away a penalty at Wolves - it should have been a yellow card.
The Arsenal defender made accidental contact with Willian Jose as he ran clear on goal and that caused the forward to fall. No one will dispute it is a foul and the award of a penalty was the right decision.
However, a law exists that protects teams from conceding a penalty and losing a player to a red card if a genuine attempt to play the ball is made.
David Luiz was incorrectly sent off after giving away a penalty at Wolves - it should have been a yellow card
Luiz was genuinely trying to get back on terms with Jose and it was an accidental foul.