Peter Welby is a consultant on religion and global affairs, specializing in the Arab world. Previously he was the managing editor of a think tank on religious extremism, the Centre on Religion & Geopolitics, and worked in public affairs in the Arabian Gulf. He is based in London, and has lived in Egypt and Yemen. Twitter: @pdcwelby.
It usually takes some time to tease out the precise ideological motivation of attacks such as the mass shooting in Christchurch, New Zealand, as details emerge from police investigations. In this case, the gunman left a 74-page manifesto explaining his philosophy.
In a flurry of activity over the past few weeks, Tommy Robinson — British alt-right provocateur, adviser to the UK Independence Party (UKIP) and convicted fraudster — was banned from Facebook and Instagram.