Provides citizens to keep firearms for protection: The second amendment has impacted today by allowing the citizens of the United States to own a firearm for self protection or self defense. ... If the police or military were the only ones to possess firearms, then they could rule the whole country with ease. The Second Amendment has become a controversial amendment in recent years. Many people want more laws to prevent people from owning guns. They think this will help prevent shootings and keep criminals and mentally ill people from getting guns. Other people want to keep this right and not have it limited.