By Nathan Ridley Chaos broke out at Aintree on Friday, as Ladies Day was marred by a violent fight between racegoers. Carnage ensued on the second day of the Grand National festival when a group of young men were seen fighting in the middle of a huge crowd. One shocking picture showed a suited man with blood around his mouth and appearing to line up a punch on another man, who was holding up his hand. A second snap showed another man hitting someone in the side of the head, as others grappled on the floor behind them in front of stunned spectators. Ladies Day is usually known for its glitz and…