Protesters hold up signs and flags to show solidarity with House Democrats after they staged a sit in over gun-control laws on Capitol Hill in Washington, DC on June 23. 2016. Democratic lawmakers pushing for tougher US gun control laws after the Orlando nightclub massacre ended a stunning 24-hour sit-in at Congress. / AFP PHOTO / Andrew CABALLERO-REYNOLDSANDREW CABALLERO-REYNOLDS/AFP/Getty Images