Here are similar Monday Morning Rambos analyzing the Aurora and Isla Vista shootings:
Here are some people talking about shootings in general:
Stop cowering and make a random person on Facebook proud!
And here's Mark Wahlberg on how he could have stopped a 9/11 hijacking (whose victims had no idea their planes were going to be purposely crashed), and then beaten Osama bin Laden to death with his freedom boner.
Never forget that Marky Mark said this.
While these guys (and they're almost always guys) overlap with those who argue that mass open-carry would discourage and stop shooters, there's a key difference. Most people in favor of "The only thing that can stop a bad guy with a gun is a good guy with a gun, at least until Batman is real" policy aren't hoping to find themselves in that situation. They just think that if they were unfortunate enough to be there, they or someone nearby could be both brave enough and lucky enough to react. Like this man responding to the Aurora shooting:
But if you look at enough examples of would-be heroes, you start to pick up on a weird sense of optimistic anger. They want to find themselves in the middle of a crisis, because they want to shoot someone in the head and be called a hero instead of a sociopath. Sometimes they're lone wolves saving the day while the masses cower, and other times they're rallying the huddled cowards to join them. But the implication is always the same: Had these noble commenters been present, the only tragedy that unfolded would have been their autograph wrist getting sore.