Chumakov, Kirsanov and Moiseev organized a group

Chumakov, Kirsanov and Moiseev organized a group and made two attacks on store cashiers, threatening the victims with toy guns. Later they attacked the collector and, together with the money, took possession of the service pistol. During a search of Chumakov’s apartment, records were found indicating that the group was preparing for a series of attacks on collectors.
Qualify the actions of these individuals.