(Portland, OR)  --  An 86-year-old man is hospitalized with serious injuries after being shoved to the floor at a grocery store in Tigard.  Police arrested 58-year-old Sean Allen Lewis for the assault Monday morning at a Winco store on Southwest Dartmouth Street.  Police say the 86-year-old man was reaching around Lewis to get some bananas when Lewis shoved him.  Lewis is facing a charge of second-degree assault.