The Earth riots of 2558 were one of the most deadly riots ever occurred on Earth. It started when one of Cortana's mysterious structures called a Guardian, released a huge wave of EMP that affected machines all over the planet. The EMP was strong enough to take down most of, if not all of Earth's infrastructure and communications. This caused civilians to quit their homes and protest in the streets of many cities such as Los Angeles, New York and Washington D.C. This was also viewed by many criminals as a chance to start their villainous schemes, under the cover of normal civilians. With the civilians demanding answers and criminals taking advantage of potential resources, the Unified Earth Government sent in the military and the law enforcement organizations to take the citizens out. This