gay marriage demo USA

Gay rights supporters celebrate after the US supreme court decision Photograph: Jim Bourg/Reuters

• Who are these people and where are they? What clues are in the picure?
• Why are they cheering?
• Why is there placard that says, "LOVE"?
• Another placard says, "Justice and equality NOW!" - why?
• Is there a mix of ethnicities and genders in the photo? What does this tell us about supporters for LBGT equality?
• In what other countries is Gay and lesbian marriage now legal?

http://www.theguardian.com/us-news/gallery/2015/jun/26/gay-marriage-supreme-court-celebrations-in-pictures
As of 26 June 2015, eighteen countries (Argentina, Belgium, Brazil, Canada, Denmark, France, Iceland, Luxembourg, the Netherlands, New Zealand, Norway, Portugal, South Africa, Spain, Sweden, the United Kingdom, the United States and Uruguay) https://en.wikipedia.org/wiki/Same-sex_marriage