"It was slow and difficult" best describes how the Supreme Court plan for desegregation was implemented.
Generally speaking, infrastructure means "<span>A. the fundamental facilities and systems that serve an area," although if you're referring strictly to construction, then it would be the beams, foundation, etc. </span>
The Freedom riders were arrested and put in jail for 30 days because they broke a state law in Mississippi. This law called for segregated facilities for black and white citizens. The Freedom riders intentionally had black riders sit-in the whites only section of these facilities. This form of protest resulted in arrests in several states across the "Deep South."