By William CrumStaff writerwcrum@oklahoman.comOklahoma City doubled down on emergency orders to keep off playground equipment, citing multiple reports of residents ignoring the warnings and even tearing down warning signs.Public health advisories caution coronavirus can persist for lengthy periods on hard surfaces, increasing risk of transmission and spread of the deadly COVID-19 respiratory disease on swings and slides.Playgrounds and sports courts are closed in the city.Read more on NewsOK.com