Editor’s note: Manteca City Council wants a crackdown on aggressive panhandling. The following is a story of one man who begs on Manteca’s streets but considers himself a sign flyer.John Allen sat beneath the shade of a small cardboard sign along Daniels Street, near the driveway that separates Kohl’s and Costco.In this busy shopping center, where cars and trucks jam the Stadium Center’s last entrance, John Allen is a lonely, invisible soul.He has only a few dollars to his name, a warm bottle of water and hot dog in his back pack, and a tormentor in Mother Nature.It’s unbearably hot.Temperatures reached 101 degrees by 4 o’clock on Friday afternoon, but the heat and the sun can feel downright suffocating and criminal when you’re desperate for water. Desperate for shade.