This app alerts you every time the police kills someone in the United States.
Free for iOS.
3. Circle of 6
4. Dronestream
This app is a version of Mobile Justice designed specifically to help combat New York's controversial "stop and frisk" laws.
7. Signal
Signal is an encrypted chat and voice call app. It works just like your favorite messaging apps, but uses end-to-end encryption. Basically this means your data is coded as it travels, and each person has a key to unlock secure messages on their own end, so the phone or internet company can't see your messages.
10. HTTPS Everywhere
11. Ghostery
View this video on YouTube
Ghostery is a web extension that shows you which companies are tracking your data, and lets you choose which trackers to block. The video does a good job of explaining why you should know about what companies are tracking your web activity.
Get it for your preferred browser.
12. Disconnect Search
View this video on YouTube
Disconnect Search is a web extension that lets you search just like normal, but without Google (or whomever) tracking your searches and connecting them to other information about you. Note: Disconnect Search is distinct from Disconnect, which is basically the same as Ghostery.
Get it for Chrome.