'Crazed: John Onyenaychi (left) has been jailed for life for trying to kill Pc Madden, pictured here outside today's hearing at the Old Bailey, and another police officer in a horrific attack in Ealing last December'

'A knifeman who tried to kill two police officers while on licence from prison was jailed for life yesterday.

John Onyenaychi, described as one of Britain’s most dangerous men, slashed PC Paul Madden’s throat with a Stanley knife in front of terrified commuters near a bus stop.

The maniac lashed out at other officers and shouted: ‘Let me finish him off.’'

http://www.dailymail.co.uk/news/article-2053310/Samad-Tadjkarimi-saves-Pc-Paul-Madden-3-minutes-death.html

Another scene thanks to non-human immigration:

'Bloody aftermath: Onyenaychi slashed Pc Madden's throat with a knife in front of horrified onlookers in New Broadway, Ealing, then begged to be allowed to 'finish him off' as officers tried to restrain him.'