I'm going to let people's dogs out and into traffic by opening their gates.
For what reason would you want to release people's dogs out into traffic?
I want to show people that they need to deal with whatever happens.
That's a totally unacceptable and awful thing to do. You should never let someone's dog out of their yard, especially if there's a chance that they could be hit by a car. If you do that you'd be putting both the dogs and the drivers in danger.
Meh. If they are gonna die I couldn't care less.
This is absolutely a thing you should care about, as letting out the dogs that belong to others is dangerous and wrong. You should feel more care towards the lives of drivers and dogs. I urge you to not do this.