"If we were to start profiling people of 'Middle-Eastern' or 'brown' appearance, jihadists will simply recruit white Muslims from the Caucasus, like the Tsarnaev brothers..."

"... who struck at the Boston Marathon. In fact, al Qaeda has been trying to use our very prejudices against us for many years, which is why Osama Bin Laden recruited a 'white army of terror' from the huge number of converts that joined his cause. If it is only men we profile, jihadists will train women, such as the Chechens did with their Black Widows, or this latest Tashfeen Malik in San Bernardino. Astoundingly, male jihadists have even cross-dressed in burkas to avoid capture. If it is any adult of fighting age that we screen for, jihadists have turned to grandmother suicide bombers and even animals laden with explosives."

Wrote Maajid Nawaz, whose Wikipedia page I'm reading after seeing him on TV talking about Brexit.