(Portland, OR)  --  Mayor Ted Wheeler is expected to hold a press conference this morning following a weekend of protests that devolved into riots.  Thousands of people flocked to downtown Portland Friday night, Saturday night and Sunday night to protest the police-involved death of George Floyd in Minneapolis.  Police arrested dozens of people after a small percentage of protesters became violent and began looting businesses and setting fires.  Wheeler's press conference is scheduled for 8 a.m.