A weather report can be classified. Something that's been published in the NY Times might be classified.
Something the Secretary of State writes themselves might be classified. Even saying "I was talking to Prime Minster whoever last week" could be classified even when there's a photo of the Sec State standing next that Prime Minister on the front page of that country's biggest newspaper.
There is no risk if someone stamps something innocuous as classified, but there's hell to pay if something that's sensitive doesn't get stamped classified. So a lot of shit is labelled classified when it doesn't need to be.
Not all classified information is about a military operation that's set to kick off in a few hours.
Hillary Clinton was very thoroughly investigated and the classified information was a big nothing-burger. Or do you honestly believe the Trump administration gave her a pass because they're benevolent?
running her own shady-ass server away from the prying eyes of FOIA
It's illegal to use government property for campaign purposes. Obviously Clinton was working towards a presidential campaign (she was working towards it her entire life) so the laws necessitated her to have emails related to that not be on a government server (government property).
Sorry, Hilary's emails wasn't anything. You were just told that over and over again until it started to sound like there might be something to it. But it was nothing.
Yeah there's no better reason to use jury nullification than when government wants to kill a guy for political reasons.