Pierre Robert Places Signs On Front Line Workers Lawn May 12, 2020 at 2560 × 1925 in Pierre Robert Places Signs On Front Line Workers Lawn ← Previous Next → WMMR’s Pierre Robert places a sign on a lawn that reads, “A Front Line Hero Lives Here” at the home of an essential worker Sunday, May 10, 2020 on Campus Lane in Philadelphia. (WILLIAM THOMAS CAIN/CAIN IMAGES for WMMR)