Remove unsourced opinions from this text: hitler made in a public speech in berlin on 4 september 1940, hitler announced that the 'night piracy of the british' shall be countered by a concentrated night offensive against the island, and especially london.
hitler `s patience was exhausted only after a succession of british raids on berlin, starting on the 25 august 1940. infuriated, in a public speech in berlin on 4 september 1940, hitler announced that the 'night piracy of the british ' shall be countered by a concentrated night offensive against the island, and especially london.