Why did the socs run away during the rumble?

The Socs ran away during the rumble because they were caught off guard by the intensity and determination of the Greasers. The unexpected ferocity of the Greasers, fueled by their desire to defend their pride and territory, led to a shift in the dynamics of the fight. Additionally, the Socs were used to having an advantage in confrontations, but in this instance, they underestimated their opponents, ultimately leading them to retreat.