With all the political issues going on, I thought it would be good to share something with all you folks who need to do something on a computer with as little risk of it being traced back to you as possible.
Tails is a portable operating system that was made to make it more difficult to trace your computer usage back to you. You don't need to get rid of your existing operating system to use it. Instead, Tails is installed onto a USB stick and runs off of RAM, leaving your computer untouched. This also means you can bring Tails with you across multiple computers.
Installing an operating system to a USB stick might sound daunting, but they've made it as easy as possible with step by step instructions for Windows, Mac, and Linux computers. It didn't take me more than 15 minutes to get it on a stick.
Nothing is saved to the hard drive of whatever computer(s) you use it on. This means that you're not saving any evidence of what you were up to.
By default, Tails forgets everything you did on it. When you shut down the computer, it wipes everything, even the stuff that normally gets missed. This makes it impossible for someone to figure out what you were doing if they get ahold of your Tails stick.
If you need Tails to remember some things (like files you're working on), you can set up encrypted storage that won't be deleted on shutdown. Someone would need your password to see anything saved there. Someone could see that you have encrypted storage enabled, though, so gauge your risk accordingly.
All connections to the internet go through the Tor network by default, making it much harder for someone to see what you're searching for and doing online.
Tails also randomizes your MAC address, which means that someone can't track you in a local network.
Make sure you read the documentation if you're in a high-risk situation; there's advice on how to make sure your online activities can't be linked together. The rest of the documentation also has great advice and goes over different options in a simple way.
If you're in a risky position where you're afraid that your digital activities might be used against you (such as seeking an abortion in a place where it's outlawed, whistleblowing, planning major protests, etc.), then it might be worth making or buying a Tails USB to reduce the risk of it being traced back to you. If nothing else, it's peace of mind to have it.