Why did Preston brooks attack sumner in seate in 1856?

Preston Brooks attacked Senator Charles Sumner in the Senate chamber in 1856 primarily due to Sumner's outspoken criticism of slavery and his derogatory remarks about Brooks's cousin, Senator Andrew Butler, in a speech titled "The Crime Against Kansas." Brooks viewed Sumner's comments as a personal affront and an attack on Southern honor. The assault was emblematic of the intense sectional tensions over slavery in the United States at the time, highlighting the breakdown of civil discourse in politics. This incident further polarized opinions on slavery, contributing to the growing divide between the North and South.