As the Supreme Court begins hearing oral arguments in the landmark case that could bring marriage equality to all 50 states, politicians and activists are lighting up social media, encouraging the court to stand on the right side of history. 

The Human Rights Campaign is urging marriage equality supporters to show that it's time for marriage equality nationwide by using the hashtag #LoveCantWait, while another hashtag, #LoveMustWin, was also picking up steam as the court sat down to hear arguments shortly after 10 a.m. Eastern. 

Democratic presidential hopeful Hillary Clinton — the only currently declared candidate for president who supports marriage equality — reiterated her support with a tweet Tuesday morning that included both pro-equality hashtags: 

Virginia's Attorney General Mark Herring, who announced last year that he and Democratic Gov. Terry McAuliffe would not defend their state's ban on same-sex marriage, was outside the Supreme Court in Washington, D.C., this morning, and filed these tweets:

U.S. Sen. Cory Booker of New Jersey shared HRC's meme of his own quote, along with both hashtags:

Colorado Rep. Jared Polis, the first out gay father in Congress, agreed that it is "time for SCOTUS to affirm every American's right to marry who they love." The congressman also changed his Twitter avatar to HRC's red equal sign: 

New Mexico Sen. Martin Heinrich shared a video of himself explaining why #LoveCantWait: