Didn't eliminate mass killings at all.
The 7 July 2005 London bombings, often referred to as 7/7, were a series of coordinated terrorist suicide attacks in London, United Kingdom, which targeted commuters travelling on the city's public transport system during the morning rush hour.
Four Islamic terrorists separately detonated three bombs in quick succession aboard London Underground trains across the city and, later, a fourth on a double-decker bus in Tavistock Square.[1] The train bombings occurred on the Circle line near Aldgate and at Edgware Road, and on the Piccadilly line near Russell Square.
Fifty-two people, all UK residents but of 18 different nationalities, were killed and more than 700 were injured in the attacks, making it Britain's deadliest terrorist incident since the 1988 bombing of Pan Am Flight 103 over Lockerbie, Scotland, as well as the country's first Islamic suicide attack.
The Cumbria shootings occurred on 2 June 2010 when a lone gunman, Derrick Bird, killed 12 people and injured 11 others before killing himself in Cumbria, England. Along with the 1987 Hungerford massacre, the 1989 Monkseaton shootings, and the 1996 Dunblane school massacre, it is one of the worst criminal acts involving firearms in British history.
On 22 March 2017, a terrorist attack took place outside the Palace of Westminster in London, seat of the British Parliament. The attacker, 52-year-old Briton Khalid Masood, drove a car into pedestrians on the pavement along the south side of Westminster Bridge and Bridge Street, injuring more than 50 people, five of them fatally. He then crashed the car into the perimeter fence of the Palace grounds and ran into New Palace Yard, where he fatally stabbed an unarmed police officer. He was then shot by an armed police officer and died at the scene.
The Manchester Arena bombing was a suicide bombing attack in Manchester, United Kingdom on 22 May 2017. An Islamist detonated a shrapnel-laden homemade bomb as people were leaving Manchester Arena following a concert by the American singer Ariana Grande. The incident was treated as an act of terrorism.
Twenty-three people were killed, including the attacker, and 139 were wounded, more than half of them children. Several hundred more suffered psychological trauma. The bomber was Salman Ramadan Abedi, a 22-year-old local man of Libyan ancestry who had recently returned from Libya. After initial suspicions of a terrorist network, police later said they believed Abedi had largely acted alone but that others had been aware of his plans.
On 3 June 2017, a terrorist attack involving vehicle-ramming and stabbing took place in London, England. A van was deliberately driven into pedestrians on London Bridge before crashing on the south bank of the River Thames. Its three occupants then ran to the nearby Borough Market area and began stabbing people in and around restaurants and pubs. The attackers were Islamists inspired by Islamic State (ISIS).[8] They were shot dead by Metropolitan Police officers and were found to be wearing fake explosive vests.[9] Eight people were killed and 48 were injured, including four unarmed police officers who attempted to stop the assailants.