Thirty-year-old David Coulombe (C), who works as a consumables sales floor associate at Walmart, participates in a march and rally for $15 minimum wage in Boston, Massachusetts April 14, 2015. Walmart has announced that it will institute a nationwide $9 per hour minimum wage, but Coulombe, who started working at Walmart as a cart pusher, already makes $11.70 per hour and lives with his parents because he cannot afford to live on his own. Coulombe took part in a protest outside Walmart headquarters two years ago and says he was "coached," a company term for discipline, for taking part. REUTERS/Brian Snyder