The hashtag. Not that long ago it was called the pound sign and was relegated to being one of the least used keys on a telephone. But over the past decade, the once humble hashtag has undergone an astronomical change, emerging as one of the most powerful symbols of the modern age.
While hashtags are often used for the most trivial things (#blueandblack vs #whiteandgold dress, anyone?) they’ve also been instrumental in bringing about sweeping social and political discussion.