If I'm a BG, intent on doing evil I will consider someone who is OCing as my most obvious and immediate obstacle to me accomplishing my goal. The OC goes down first. Same reason the armed guard in a bank is the first guy bank robbers disarm or disable.
Most perps aren't looking to kill, they're looking to get in and get out.
Wouldn't you think that the typical perp would rather pick another store than confront an armed citizen?

And what if OCing caught on, are they going to be willing to take on 10 armed citizens?

and as a last point, your typical bank security guard is either old, overweight, or a combination of the two. If you had a 6'1" 200 lb. physically fit man sitting there in place, it might turn out differently.

Granted, this is just MY opinion and I'm not trying to claim any of it as fact.

And while many of you are NOT interested in making a political statement, I am.

It wasn't that long ago that "assault weapons" were banned.

And it's completely possible for something like that, or even more restrictive, will surface in the future.

It takes responsible, active, and brave citizens to let the law-makers know that WE WILL NOT TAKE IT.

And thankfully, with current law, I can make my political statement in a clear and legal manner, as well as protect myself.