Rubuta ci gaba ga wannan sakin layi - A 1823, ya shiga Kudancin Society of Decembrists
kuma ya zama daya daga cikin manyan mataimakan Sergey Muravyov-Apostol a kan Vasilkovskaya Uprava na Kudancin jama'a. Ya kasance mai shiga cikin taron Kungiyar Kudancin a Kiev da Kamenka, kuma ya yi shawarwari tare da kungiyar asiri ta Poland. Shi ne marubucin sanarwar Decembrists wanda aka karanta wa sojoji da manoma na gida. An kuma san shi da sanya tufafin talakawa da kuma zuga mutane su yi tawaye ga masarautar. Bestuzhev-Ryumin shine mafi tsananin jamhuriya a cikin Decembrists; ya dage kan bukatar kashe Sarkin sarakuna da danginsa duka. Akalla wasu mambobi hudu na dangin Bestuzhev sun shiga cikin makircin Decembrist.