The 250th anniversary of the U.S. is on July Fourth this year. And now, there’s a movement to celebrate the day after, July 5, as the first annual Martyrs’ Day. “It’s almost like Martyrs’ Day was hiding in plain view,” said Gloria Browne-Marshall, a constitutional law professor at John Jay College, which is part of CUNY. She said July 5 was chosen because it’s the anniversary of Frederick Douglass’ 1852 speech about what Independence Day meant to those enslaved.