A Principle or a Slippery Slope?

Some might call the following a slippery slope argument. Slippery slope arguments are not necessarily invalid.

Let us say that a government by the citizens guarantees rights and freedoms to all its citizens. At some point the Executive Branch of that government decides to suspend those rights for a small class of citizens. The Executive tells everyone not to worry it is only these others who have their rights suspended. These others are not like the vast majority.

History often shows that this small class of others grows larger once any one class of citizens has their rights suspended. Such is the way with unchecked power. At some point any who dissent or oppose the Executive no longer have rights. Those who still think they have rights are merely fooling themselves.

If the historical evidence leads us to this conclusion, then the argument is far from being a slippery slope argument. Slippery slopes do at times exist.