When the grown-ups decided to go to war in Afghanistan, a lot of people didn't like it. Some people thought that it wasn't fair to invade another country and hurt innocent people there. Other people thought that the war was too long and too expensive, and that the money and resources could be better used to help people at home.
Some people also argued that the reasons for going to war weren't clear, and that the government wasn't being honest about what was really going on. They said that the war was being fought for political or economic reasons, rather than to protect people from harm.
Over time, more and more people joined the opposition to the war. They organized protests and demonstrations to show that they didn't support the war and wanted it to end. They also wrote letters and made phone calls to their elected officials to express their views.
Despite the opposition, the war continued for many years. Some people argued that it was necessary to protect people from terrorism, while others continued to believe that it was wrong and harmful. Eventually, after 20 years, the war ended and the soldiers came home.