The 4th Amendment to the Constitution protects citizens "against unreasonable searches and seizures", meaning that the government should not violate the privacy of a person. The government should never get into a citizen´s property without a specific reason, or if they do not have a particular cause. They should always have a "warrant" or specific, well documented reason why the access is required by them.
Truman's ordered the armed force to desegregate, or stop separating people based on race. He told the Justice Department to carry out any civil rights laws that were already in force. He want to protect African Americans better.
