The info that I have says that the Tacoma, Washington show was played on March 19th. I don't see a date for Minneapolis at all around that period of time or a Target Center venue.

The Tacoma, Washington show was played in Washington State, on the north-west coast of the US.

Washington DC is a separate region created by congress as the country capitol on the east coast of the US. From Wikipedia:

Washington, D.C., formally the District of Columbia and commonly referred to as Washington, "the District", or simply D.C., is the capital of the United States. On July 16, 1790, the United States Congress approved the creation of a federal district to become the national capital as permitted by the U.S. Constitution. The District is therefore not a part of any U.S. state. It was formed from land along the Potomac River donated by the states of Maryland and Virginia; however, the Virginia portion was returned by Congress in 1846.

So yes, some of the land came from Maryland. And yes - chances are the show you are thinking of is Landover, MD whose team has had many name but is now the Washington Wizards (former Bullets). It's kind of like the New York Giants playing at the Meadowlands here in New Jersey. They are a New York team but their home stadium is in New Jersey - confusing right?