If the Woolwich boys think the ref was poor then what about the yellow that Koscielny got towards the end of the game. That should have been a red as he fouled Lukaku in the Arsenal half and he was the last man.
Not actually true. Bellerin was not last man
If the foul is violent or consists in a hand ball in the box then the player will get a red card . As long as the foul is judged to be an honest attempt at taking the ball , the defender will only be shown a yellow card.
That is crap as he was cheating by pulling back a player that may have scored.
As I have already stated the rules above, yellow is the only one he could have got. However had he not got dragged down, who will ever know what might have happened. And by the way Lukaku is pretty quick.