But you didn't answer the question of the meme. They didn't even have a chance to defend themselves in France because of gun control laws.
For one, private establishments like the Pulse club DO have gun control laws. Do you know many clubs that allow firearms? How could a gun owner stop a shooting when THEY AREN'T ALLOWED TO BRING THEIR GUNS INTO THE CLUB FOR SELF DEFENSE? High schools don't allow firearms either.
What do you expect? For every gun-owner to be a superhero and stop every shooting? There have been way, WAY more shootings STOPPED by gun owners.
Here's a recent example of a shooter being stopped by a legal gun owner:
http://m.washingtontimes.com/news/2016/jun/30/concealed-carrier-takes-down-shooter-at-south-caro/
Do you have any respect for the constitution?