Take the antiwar movement about Vietnam for example. There were young people who were properly outraged by the war and thought that the ethical attitude to have was to carry out acts of destruction against US property, corporations, destroy armaments, and so on. That’s ethical, but it was harmful. The Vietnamese were strongly opposed to it. They did not care about the fact that people in the US felt good, they cared about what happened to them, on the ground. And the effects on them were harmful since it provoked a huge backlash and strengthened support for the war.
