Researcher Valery Evgenievich Shambarov draws attention to the passivity of military units that sided with the rebels: “The regiment of the Cheka, under the command of Popov, rebelled quite strangely. On March 1, their forces were armed with 1,800 bayonets, 80 sabers, 4 armored cars and 8 artillery guns. The Bolsheviks in Moscow had 720 bayonets, 4 armored cars and 12 artillery guns. But instead of attacking and winning, taking advantage of surprise and an almost three-fold advantage, the regiment passively "rebelled" in the barracks ". Shortly after the assassination, Lenin ordered Yakov Peters to put under guard the whole Left SR faction of the Fifth Congress of Soviets (approximately 450 people). The Bolshoi Theatre, where the session of Congress took place, was surrounded by chekists and Latvian riflemen. Bolshevik delegates of Congress were allowed to leave the theater, while Left SRs were arrested inside the theater. Despite sympathy on the part of the Moscow garrison for the SRs, the Bolsheviks mustered enough forces on the morning of 7 July to storm their positions, thanks especially to the support of the Latvian Riflemen, who remained loyal to the Bolsheviks. In the Bolshoi, Maria Spiridonova and Andrei Kolegayev severely reproached Trotsky for their confinement and for the measures taken against their comrades. Trotsky responded by accusing the Socialist Revolutionaries of having risen to take power. After a vain attempt to stop the clash, pro-Bolshevik units attacked the SRs.The first assault, scheduled for 2:00 a.m., was a failure. Being a Sunday and a public holiday – St. John the Baptist's day - the troops assigned to the assault did not show up and forced it to be carried out the next day, instead of taking advantage of the night, as originally planned. The attack finally started at noon with the use of artillery against the Cheka headquarters, which was badly damaged by the explosions. Around 2:00 p. m., the revolt had been put down and the SR leaders had fled, abandoning Dzerzhinski in the building. Of the defenders, the assailants ended up capturing about four hundred. Aleksandrovich, captured shortly thereafter at a nearby railway station, was executed the same day. Popov and eleven other Chekists who had participated in the uprising were also subjected to execution without trial. In Petrograd, July 7 dawned warm and sunny, the streets were filled with people.