(NewsNation) — Online activists are using the keywords “music festival” to spread the word about protests in Los Angeles, Portland and Washington, D.C., in an effort to avoid social media suppression.

Netflix's library is a lot bigger than what shows up on your homepage. Hidden inside the platform are hundreds of niche categories sorted by special codes, and most people don't even know they exist.

Introduction: A revolutionary cipher -- Cryptology before 1500: a bit of magic -- The black chambers: 1500-1776 -- Crypto goes to war: the American Revolution -- Crypto goes to war: the American Civil ...