Halloween is a day of candy, costumes and fun. But for Harry Potter fans, it is also a time for sorrow and reflection.

Today, muggles all over the world mourn the anniversary of the death of James and Lily Potter, Harry’s parents. Though James and Lily are fictional characters, their impact on Twitter is real. The global trending topic has seen 17,000 mentions and counting today.

Photo by ptooey

Squatty Potty How a viral video of a unicorn is changing the way we poop
You've seen the viral ad. Now we're putting the Squatty Potty to the test.