Many in history, such as Robespierre, Marx, and Engels, have cited ideas around class warfare. About how the working class is a homogeneous group opposite the elites.
But if we take a closer look at history, all that has ever happened is that a new elite replaces a previous elite. The French Revolution took down Louis XVI, and in his place, there were the likes of Robespierre, enjoying their newfound wealth. Same with the Russian Revolution, where the Czars were wiped out and replaced by Lenin, who would go on to become the big guy, and so on. Same thing in Africa, some guy is the "hero" of the people, becomes president, and before long, he is stepping on the very people that supported him. Ransacking the economy, buying castles in Europe. Revolutions happen, old orders are wiped out, new orders emerge.
The real struggle is not between poor and rich, but rather between man and man. Neighbor versus neighbor. Many people would not think twice about mugging and robbing their own neighbor, even if said neighbor is equally poor. In Latin America, peasants need to watch out for their crops, lest some of the nearby people come and steal it. Just like many politicians who were born in poverty that, once they manage to prosper, go on ahead without looking back, often stepping on people from his same "class". In many countries, so called "popular guerrillas" often times rob and kill poor farmers and peasants under wathever excuse.
Class warfare is a myth. Reality is man versus man. There are only two types of people: People we like, and people we dont like.