Sometimes I think I don't have enough to do, but such is the life of Security,,,
But my point is the right to participate in a legal activity and another saying that the activity is wrong. As you say we can rights and slavery all day long but when we get to sundown, it will still be the right to participate in a legal activity that will win out. The acitivity may be a source but it is not the cause.
We could fix football to the "source of contention" and the "cause" would still be the "right" to do it.