Agreed. But here's the issue - that's a sweeping statement that's easy to agree with but is orthogonal to the problem at hand. Registering muslim citizens is absolutely something that Trump's advocates are saying they can do. Registering muslim immigrants is absolutely something we had from 2002-2011. And the debate there isn't "muslims have rights" it's the far more complex "do we accord non-citizens the same rights as citizens." I, personally, say hell to the yes. However, I recognize that the argument of citizens-vs-non-citizens is a very different argument to have than the argument of muslims-have-rights. I further recognize that the former is a more intellectual discussion to have, while the latter is likely to delve immediately into emotion.