It’s important to read this:

https://www.nytimes.com/interactive/2017/10/25/world/africa/nigeria-boko-haram-suicide-bomb.html?hp&action=click&pgtype=Homepage&clickSource=nytmm_FadingSlideShow_item&module=photo-spot-region&region=top-news&WT.nav=top-news&_r=0