On May 22, 2017, an Islamist extremist suicide bomber detonated a shrapnel-laden bomb as concert goers were leaving Manchester Arena in England following a performance by the libertine, American singer Ariana Grande. The bomber was Salman Ramadan Abedi. His brother Hashem Abedi was later found guilty of 22 counts of murder relative to the bombing.
Twenty-three people were killed - including the bomber. And more than 1,000 were wounded.
A local community worker told the BBC that he had called a police hotline five years before the bombing to warn authorities about Abedi's radical Islamic views. In addition, members of Britain's Libyan diaspora indicated that they had "warned authorities for years" about Manchester's Islamist radicalisation. However, in post-Christian Britain, the government does not have the morals or courage to confront Muslim extremism (see also: Atheism and morality and Atheism and cowardice and UK and secularism).
Britain's globalist/multiculturist experiment with Muslim immigration caused the July 2005 London Bombings and the Manchester Arena Bombing. In 2017, there were three Muslim terrorist attacks (2017 London Bridge attack, Parsons Green train bombing and the 2017 Westminster attack).
According to Dr. Peter Hammond, as the Muslim population increases in a non-Islamic country, the violence and terrorist attacks increase (see: What Islam Isn't - Dr. Peter Hammond). It would take a rechristianization of Britain in order for the Islamic terrorism situation to be turned around in the UK. In the 21st century, Europe will experience desecularization (see: European desecularization in the 21st century).