I don't mean to offend, but I think that this is not a rational comment. I think it illustrates my point that rational discourse can rapidly become irrational when politics get involved. Again, I stress that this is why I am strongly in favor of a moratorium on politics on HN.
You express a fear that Trump is going to somehow strongarm, subpoena, or otherwise force tech companies to roll over and give over private data on every Muslim in the US. Notwithstanding the massive technical challenge involved there, I'm fairly certain such a request would be met with significant opposition at some stage - from judicial challenges, to company refusal, to public backlash. It simply is not a situation that can reasonably happen (especially quietly), no matter how loudly Trump might yell about it.
Additionally, you must keep in mind that a sizeable fraction of the population had very similar fears (re: gun control, healthcare, socialism, etc.) when Obama was elected in 2008. These folks were scared of what Obama would do based on what he promised to do. In the end, checks and balances won out, and Obama didn't end up doing many of the things he promised to do. (He's still a great president, though - in my opinion of course).
It's normal to be scared in these times, but it's not a good idea to lose your head. Trump can say a lot of terrible, terrible things - people are literally entitled to say whatever they want in this country - but if you rationally analyze the feasibility of his plans you'll realize that most of them aren't actually doable. And, you may also realize that some of his plans are even good for the country - for example, infrastructure spending is a proven way to improve the economy, and it is something that the US quite desperately needs (see: John Oliver).
Now, I shouldn't need to say this on a forum like this, but I am by no means a fan of Trump. I think that his rhetoric is dangerous, but he _is_ going to be president, and that means working with him to establish the best policies and compromises going forward, rather than stubbornly refusing outright to work with him.