The reason people are 'fine' with it, is because it's a rational response to a real concern. Guccifer was hacking into people's accounts, revealing information

The reason people are 'fine' with it, is because it's a rational response to a real concern. Guccifer was hacking into people's accounts, revealing information of a national interest. So there is some proportional reaction by law enforcement. "But when someone innocent gets caught up in it, then it's too late and there's no remedy." Who are these innocents 'caught up in it', for which there 'no remedy'? It's possible investigators make mistakes while matching DNA just as well, but we don't deny them the right, because it seems the 'science' supports DNA as evidence. So we use it. I think that is a real but smaller concern - bigger concerns are large dragnets (arbitrary data collection), lack of oversight (no warrants), lack of proportionality (i.e. local Police getting access to all your searches because someone made a 'noise complaint'), and politicization (i.e. Trump getting search records on political enemies etc.).