The themes of Julius Caesar are universal, which is why they still speak to us today, hundreds of years after the play was written and thousands of years after the events it depicts took place. Over the years, productions of Julius Caesar have played out the power dynamics of Ancient Rome in radically different settings, whether it's remote African villages, the boardrooms of corporate America, or even American high schools. This has been possible because such power dynamics show striking similarities wherever and whenever they arise, irrespective of the contingencies of time and place.
Politics can be a dirty business, whether in a Republic such as ancient Rome or in a modern-day liberal democracy. Everyone has their own ideas about how things should be done, and the more ambitious among them are prepared to do whatever it takes to put their ideas into practice.
This is what happens in Julius Caesar and what has also happened in many different societies around the world for thousands of years. Even if such jockeying for power doesn't always lead to assassination, bloodshed, and civil war, as it does in the play, it can still have far-reaching effects on any given society. Much the same factors (pride, honor, and ego, for example) are involved each time, because those involved in politics—whether it's the politics of the tribe, the school council, or the corporation—tend to share the same basic motivations.