Why did the recent Paris attacks result in so many dead?

Let's compare the recent 2015 Paris attacks with another relatively recent incident in Garland, Texas.

In Texas, there was a "Draw Mohamed" contest that seemed to offend some so much that they decided to go kill the offenders.

Different results though.  Attacking terrorists dead.

Just curious about the root causes of the Paris attacks.

       Do they have strong free speech rights in France?  No.
       Do they have wide spread gun ownership rights in France?  No.

Do they have strong free speech rights in USA?  Yes.
Do they have wide spread gun ownership rights in USA?  Yes.


Supporting Links:


What happened?

Paris attacks: Prosecutor Molins says three teams involved

 Garland shooting: Isis claims attack on Prophet Mohamed cartoon contest in Texas as its first action on US soil
 

Why?

What Are France's Gun Laws Like? The Attacks Took Place In A City With Strict Firearms Prohibitions
 
What they don't tell you about Islam


Please connect the dots.

Thank you