Can somebody revise this paragraph please?

Humanity versus humanity can be hell on earth. Humans have made guns and different kinds of weapons, but the worst thing is that humans have made weapons of m destruction. Examples of this are the atomic bomb, biological arms, and chemical weapons. These weapons are made to kill or infect whatever they touch. Also, these are used for supremacy and dictatorship around the world. No one should have the right or the tools to develop this kind of weapons because they have brought wars, deaths and dictatorship to this world.