Answer:
In S.E. Hinton's fictional novel, The Outsiders, the animosity between the Greasers and the Socs are primarily based on class. For example, the wealthy Socs believe they are superior to the poor Greasers, resulting in a rivalry in which, according to the main character, Ponyboy, the Socs target the Greasers rather than the other way around. Because the Greasers lack money, they are compelled to wear less expensive clothes and live in poorer houses, which prompts the Socs to ridicule them, which is generally a reason why they don't get along and are enemies. Another reason could be that they are from different parts of town, which are diametrically opposed to each other. Their rivalry is primarily spread by the Socs' negative atmosphere, resulting in negative interactions between the Socs and Greasers as mentioned above, Ponyboy is beaten up by a Soc, as is his friend Johnny, who was severely beaten up; the Socs beat them up for no reason other than entertainment, kicks, and fun, which as a result causes more and more fights to break out among the opposing sides, as obviously you wouldn't want someone from the same gang as you to be pushed around by a different group. This is why the Socs and Greasers are portrayed as enemies in S.E. Hinton's fictional novels.
love the outsiders :)