Community organizers are recruiting volunteers to pressure lenders and law enforcement officials not to foreclose on homes in Colorado — and, if the pressure doesn’t work, volunteers plan to lock arms and resist sheriff’s deputies when they arrive to evict homeowners. The Association of Community Organizations for Reform Now (ACORN) plans to bring its Home Defenders campaign — unveiled in a handful of cities across the country last month — to the Denver area this Saturday with a rally at the Aurora home of Leonard McWilliams, a disabled Air Force veteran and single parent of three teenagers who has fallen five months behind on his mortgage.