Why did aristocrats assassinate Julius Caesar?

Aristocrats, particularly those in the Roman Senate, assassinated Julius Caesar primarily because they viewed him as a threat to the Republic and their own power. His accumulation of power, title of dictator for life, and reforms that favored the lower classes alarmed many senators, who feared he aimed to establish a monarchy. The assassination on the Ides of March in 44 BCE was seen as a drastic measure to restore the traditional republican governance and curb his growing influence. Ultimately, their actions reflected a deep-seated tension between populism and aristocratic privilege in Roman politics.