It does not matter to the killers if their victims are Christian or Muslim, Hindu or Humanist; what matters is that they show that they can kill where they please.
Actual human discourse happens within a number of contexts, not in some sort of unified public forum.
A public is a necessary fiction.
Truth makes love possible; love makes truth bearable.
I value unity because I believe we learn truth from each other in this process.
Religion has always been a matter of community building; a matter of building precisely those relations of compassion, fellow feeling and - I dare to use the word - inclusion, which would otherwise be absent from our societies.