What is the significance of 'rough beast' in Second coming?

The "rough beast" in W.B. Yeats' poem "The Second Coming" symbolizes a chaotic and ominous force emerging in a world undergoing profound transformation. It represents the antithesis of Christ's return, suggesting the arrival of a new, possibly malevolent era. This imagery reflects Yeats' view of societal disintegration and the unsettling changes of the early 20th century, embodying fears of a violent upheaval and a loss of established order. Ultimately, the "rough beast" evokes the uncertainty and dread of a future shaped by darkness rather than redemption.