Leon Trotsky's arrest in Halifax occurred when British authorities detained him in this Canadian city while returning from the USA to Russia in March-April 1917. Trotsky was accused of receiving 'German money' to overthrow the Provisional Government. This violent detention caused a wide resonance in both the Russian press and the international arena. Vladimir Lenin actively facilitated Trotsky's release. In the camp, Trotsky continued to successfully conduct agitation work among German prisoners of war. This incident and the subsequent release brought Trotsky closer to the Bolsheviks and led other socialists returning to Petrograd and Moscow to avoid British territory.