As somebody who writes lots of intense stories, many of which have a national espionage/political aspect, my search history would be scary to any curious observer.
To begin with, I've looked up diagrams of the US capitol building, processes of Senatorial subcommittees, and various descriptions of high profile senators. To supplement that, I searched how much C4 cost, how much C4 it would take to blow up a building, and the cost of an untraceable assault rifle.
I've also researched a TON of information about different weapons, including prices, ease of use, calibers, legality, and so on and so forth.
I also looked up various biological things for humans, such as maps of arteries, where you can survive a knife wound, the effects of hollow point ammunition on the body, how big of a caliber would you need to cause someone's head to explode, and how much blood would flow from a dying body if they were slashed across the throat.
For miscellaneous questions I've asked the almighty Google: I looked up immigration law, landmark supreme court cases on firearms, how to hide your money from taxes, what rate do money havens charge for a transfer through their bank, the effects of shock, bloodloss, and panic attacks on people and so on and so forth.
