17 Killings in France & 100 killings in Africa

Last week 17 innocent persons have been slaughtered by fanatic so called islamists (so called because they abuse the Islam to spread terror and kill others). Millions came in the streets to protest and show their disgust with such barbaric acts.
This week hundreds of people are reported to be killed by Boko Haran in Africa. It is mentioned in the news … but no-one goes into the streets, no government leaders gather to walk together hand in hand, no action is taken to stop these ongoing acts of terror.
I find it incredibly frustrating and unjust that there seems to be a difference.
What can we do about this?