7/7
On July 7, 2005, a series of coordinated terrorist attacks occurred in London, England. Four suicide bombers targeted the city's public transport system during the morning rush hour, detonating explosives on three trains and a bus. The attacks resulted in 52 civilian deaths and over 700 injuries, marking one of the deadliest days in British history.
The event is commonly referred to as "7/7" and led to significant changes in security policies and counter-terrorism measures in the United Kingdom. It also prompted discussions about Islamophobia, terrorism, and the impact of extremism on society.