No body gives you power but it is taken from the people by those that need it. It is taken from the poor, the rich, middle class, religion, ethnic groups,weaker countries etc.If you need power especially politicians and world power countries,these people can go to any length to make sure they get that power. Check out what is happening in Russia and Ukraine ,Isreal and the Palestine. Each country is showing power either by technology or man power.
There are in instances in history in which people have voluntarily given up their power for the sake of democracy and the well-being of their country.
Take the example of George Washington, he fought the English army off the American continent and after he managed to do that, he gave up the power of the continental army to the Congress of the United States.
So while it is rare to see those things happening in human history, it is not impossible for it to happen.