Hello, there. Some of my students ask me which sentence is correct，and the two sentences are as follows:1. People are stopped to run the red light by the volunteers.2. People are stopped running the red light by the volunteers.From my perspective, the first sentence tells us people are stopped before the action of running the red light, while the second sentence means the action is already going on , and then the volunteers try to stop them. I'm not sure about my understanding. Please help me.