So, are you simply lying or did you not bother to even check? I will guess you're lying based on prior experience with you.
10 Cases Where An Armed Citizen Took Down An Active Shooter
Guy do you really want to go there... Okay, lets.
Case one and two didn't involve cases in the US. The y happened in France and South Africa... and there were fatalities.
Case 3 leaves out the part about the guy involved being a reserve deputy. Funny they ommited that part.
Case 4 on your list involved a principle that was an Army Reserve officer. Again, a detail they left out for some reason.
To be fair, they did admit the following in the next three.
Case 5 on your list was a trained security guard.
Case 6 was an ex police officer
Case 7 was an off duty police officer.
Case 8 was an off-duty police officer (And they omitted that part again)
Case 9 they didn't give the person's name.
Case 10 is from 1915!!!
So, yes, gun violence CAN be stopped by well-trained peace officers who can sometimes limit fatalities.
But the guy like yourself who owns a gun because you are scared? Not so much.