Do you think that Penny should have waited for someone to be hurt before doing something?
No. I think a man trained by the US Military to be able to kill a person is also trained to know how to moderate that skill or ability. I also don't really like vigilante justice in any form, but especially because in this case the guy had not yet done anything to deserve a death sentence.
As I said in another post on this thread: my town has a goodly amount of homeless and several who are floridly mentally ill. One is rather scary all the time. Stamping up and down our streets shouting and screaming at nothing in particular. As I said in my previous post: I would NOT want to be in this guy's crosshairs because I don't know how dangerous he would be but, by the same token, I wouldn't want some vigilante saving our community by gunning him down on the street just for looking scary.
The REAL solution is much harder: we need to do the other half of what we planned when we shut down the mental institutions back in the 60's-80's. We never followed it up by increasing access to mental healthcare in our communities.
Conservatives, in their zeal to save money for the military, have kept us from expanding social systems for decades now.
So the guy on the subway in NYC? Yeah, that was a Conservative America problem.
I think you are batcrap crazy if you think that we must be damaged before defending ourselves and others.
Thankfully I actually have an adult and rational answer.
Surely you aren't OK with vigilante justice, are you? Do you really want that for our society?