The police would not just burst into your house without a solid reason to. They could but wouldn't it would just be a total waste of time. So if you were just a normal person doing nothing weird or suspicious you would be totally fine.

But for the police to get a warrant usually takes more than 48 hours. That's enough time for the person to run away or do terror.

We are not saying they can arrest whoever they want to. We are simply saying "if you don't have anything to hide, you have nothing to fear." So a police officer could not arrest whoever they wanted to without proof or evidence that the person has broken the law.

Argument #2. 72% of Americans are in favor of surveillance in public areas and 56% of Americans don’t believe the government has gone too far in protecting the country.

Supporting argument: http://www.pewresearch.org/fact-tank/2016/02/19/americans-feel-the-tensions-between-privacy-and-security-concerns/

and

http://www.nj.com/news/index.ssf/2011/09/privacy freedompollshowsame.html