text:  For years, Los Angeles has been trying to figure out how to deal with a ballooning homelessness crisis. There are tents all over streets here in L.A. Efforts have been underway to get homeless into shelters, and police have cleared out encampments. A new federally mandated count found 75,312 people are homeless in L.A. County on any given night. That is down about .3%. L.A.'s mayor, who declared an emergency over homelessness, is calling it the beginning of change. Alex Stone, ABC News, Los Angeles.