In October 1884, intensifying Jiyu Minken Undo culminated in the Kabasan Incident (a failed terror attack attempt and subsequent harsh crackdown on activists of Jiyu Minken Undo in Ibaraki and Tochigi Prefectures), prompting Itagaki to dissolve the Liberal Party for the time being.
明治17年（1884年）10月、自由民権運動の激化で加波山事件が起き、自由党を一旦解党した。