It's black humor, respecting the Charlie's spirit
From left to right:
1st: "Crisis in France: Drastic staff reduction at Charlie"
2nd: "Thank You For This Moment" (cf. French President ex-lover Trierweiler's book title)
3rd: "French people became stupid: Charlie it's us!"
1st: "Frenches against death penalty"
2nd: "Boom in Charlie's sells: Thanks to Al-Qaeda readers"
3rd: "Boys don't cry" Charlie