sentences:  A larger group sent from Warsaw under Walery Sławek never made it in time to take control or affect the uprising; it was, in the end, an anarchic and unorganized violent protest against the Russian government.Tensions mounted further, and in the evening of 21 or 22 June (sources vary), angry workers began building barricades and assaulting police and military patrols, killing those who did not surrender.About a hundred barricades were constructed over the course of the next few days.