London's tribute to murdered police officer Keith Palmer
Updated 12:47 PM ET, Mon April 10, 2017
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Well-wishers joined officers who bowed their heads in tribute along the 2.6-mile (4-kilometer) procession route while National Police Air service helicopters paid tribute from the skies above.
The 48-year-old police veteran and father was fatally stabbed at the Houses of Parliament by Khalid Masood on March 22 in a rampage that left four others dead.
Palmer, from south London and an ardent Charlton Athletic soccer fan, had served as a police officer for 15 years.