Depending on the particular political/social/religious views of the friends you keep on Facebook, you may have noticed that your news feed is a little redder than normal today. Fear not, the Red Army hasn’t taken over Menlo Park. What you’re seeing is marriage equality supporters, well, showing their support.

As you may have heard, the U.S. Supreme Court began to hear arguments in the first of two cases involving same-sex marriage today. The first one involves the constitutionality of California’s voter-approved Prop 8, which bans same-sex marriage. The other one involves the nearly two-decades old Defense of Marriage Act.

Today, Facebook users are showing solidarity with the marriage equality cause by sharing and making a red equals sign photo their temporary profile pic.

The photo originated with the Human Rights Campaign, who posted the image to their Facebook page. As of right now it has over 15,000 likes and over 47,000 shares.

The red and pink equals sign is a play on the HRC’s logo, which is a yellow equals sign on a blue background.

The photo began to spread even faster when Facebook superstar George Takei shared it with his 3.7 million+ followers.

George Takei2 hours ago

For those friends wondering, this special “red” equality symbol signifies that marriage equality really is all about love. Thanks to the Human Rights Campaign for this effort. Please consider changing your profile today in support–esp if you are a straight ally. Powered by socialditto  1,000+ likes ·  1,000+ comments

Whether changing your profile pic in support of a cause is worthwhile or simply slacktivism is up for debate. But there’s no denying that the HRC’s campaign is one of the most successful campaigns of this type that we’ve seen in a while (ever since KONY 2012, really). Maybe it’s just the company I keep on Facebook. Are you seeing a lot of red in your news feed today?