Most arguments can be solved peacefully if people are willing to do so. Think of Mahatma Gandhi.

In pretty much all of your day-to-day life, I'd think. For example, I woke up non-violently this morning, made a non-violent cup of coffee, and cooked breakfast with an extra helping of non-violence. Soon I shall have a shower - without any violence, of course. I'm such a pacifist... even though I'm nowhere near the ocean.

Usually as a counter to violent actions.

When it works.