Assuming that this is referring to the same list of options that was posted before with this question, the answer is that they have gotten involved with casework for all of the following reasons except "domestic issues"
A picture of community could look like a group of people tending to a community garden. A picture of democracy could be people at polling stations waiting to vote.
In the wake of King's assassination in 1968 riots broke out in more than one hundred cities across the United States as people grieved; James Earl Ray assassinated Martin Luther King Jr. on April 4th 1968, when King had come to Memphis in support of a labor strike.
It is the transportation industry that is most directly affected by the ruling in Gibbons v. Ogden, since the ruling stated that the same power to regulate commerce can be used to regulate navigation.
