The exact responsibility for the massacre it is not easy to fix. Its immediate cause was unquestionably the panic into which Paris was thrown by the advance of the Allies. The terror of the moment produced a civil war between those who felt that they were fighting for their lives, and those who were supposed to be the friends of the invaders. In that war the more desperate conquered, and the weaker party fell. No doubt, the conquest was achieved by the aid of ruffians. A crisis of extreme peril, when rumour is busy and suspicion rife, brings to the surface many elements of disorder. The Ancien Régime had left in Paris ample material for crime. It had taught the poor to be ignorant and brutal. It had created a class of men to whom pity and prosperity were equally unknown. Historians have long disputed whether the Insurrectionary Commune was responsible, or whether the movement was spontaneous. No doubt, the leaders of the Commune, Panis, Sergent, Hébert, Billaud-Varennes, and their guide and coadjutor Marat, gave it at least encouragement and approval. It was Marat's policy triumphing at last. But the truth is, Paris must share the responsibility, for during those days of bloodshed, although the number of murderers was very small, no one interfered. The Legislative Assembly looked on, no doubt with grave compunction, but for all effective purposes with indifference. The volunteers, the National Guards, the great body of Parisian citizens stood by, apathetic or cowed. Robespierre may have found it difficult to reconcile the massacre with his sentimental love of virtue; but, though he was then a member of the Commune, he did nothing to arrest its course. He could always persuade himself in the last resort that murder was the justice of the people. Danton, with sterner logic and audacity, believed it to be necessary to paralyse the Royalists, and deliberately declined to interfere. Some of the Girondists were horrified, and made honest attempts to check the bloodshed, but attempts of an ineffectual kind. Others of the Girondists seem to have regarded it as inevitable, if the Republic were to be secured. Roland afterwards weakly tried to palliate it. Pétion offered the murderers refreshment. The fact is that the Girondist leaders were themselves exposed to the suspicious hostility of the Commune, and were powerless or disinclined to act[9].