The economic problems in Whitechapel were accompanied by a steady rise in social tensions. Between 1886 and 1889, frequent demonstrations led to police intervention and public unrest, such as Bloody Sunday (1887).[10] Anti-semitism, crime, nativism, racism, social disturbance, and severe deprivation influenced public perceptions that Whitechapel was a notorious den of immorality.[11] Such perceptions were strengthened in the autumn of 1888 when the series of vicious and grotesque murders attributed to "Jack the Ripper" received unprecedented coverage in the media.[12