Definitions are important especially since we tend to be a society that analyzes, categorizes, objectifies, and enforces legal and social control through labels and definitions. Labels and definitions allow containment and shepherding of ideas and concepts. It facilitates communication in some ways but also allows propagandizing and manipulation or politicization of shared mind spaces.
There may be discrete concepts that overlap or conflict in some areas but a system utilizing broad definitions can link originally tenuously related ideas so they become like scattered magnets on a confined surface. You pick up up one but a dozen others come along with it and it is difficult to separate or pry them apart. In other words you accept the premise of one label or definition and are compelled to accept many others to which you may have serious objections. So the setting of labels and definitions that operate at the level of social and legal and political discourse and those which a government adopts deserve careful scrutiny and thought since our acceptance will impact not just policy but even the mode in which a society and individuals begin to think. This clustering of labels and definitions is quickly adopted as a means of political manipulation, political warfare and as an easy path to influence minds and shape the landscape of a nation.
And in our time, more than in any other era, labels and definitions and the structures generated from them when they begin to clump together, proliferate with bewildering speed and impact. And the way our world is shaped changes correspondingly.