Yes indeed, it should be condemned unanimously.
The problem is, at the same time the world was crying about the Paris attacks, Tens of people were killed in Yemen,Iraq, Nigeria and Pakistan in terrorist attacks. But for security council, only the Paris attack mattered, same as the world media and the public, all thanks to the media. It seems European and western lives matter much more than other parts of the world. Attacking innocent civilians is always a disgusting act, be it in Paris, ME or Mars.
The France's role in Syria was not mentioned, neither its dark history of actions in ME and N Africa, and how its colonialism killed hundreds of thousands in Algeria and North Africa. If western media dare to bold Islam as its whole in all these attacks, so why shouldn't we bold the extremely dark history of European colonial powers centuries ago which is still making these countries suffer directly and indirectly and changed the world's shape forever.
Ironically, Assad warned 1.5 years ago that by arming unknown groups in Syria, Europe is going to get the backlash, because terrorism is a 2-way streets, but it seems that the only thing that mattered for Europe is removal of Assad, nothing else. Now look at European chickens coming home to roost.
We all condemn this cowardice attack and any similar attack around the world, but talking about some side stories and some roots of these incidents is necessary.