Claude Ruffin, 62, says officers came into his room at a Long Island City shelter on New Year's Eve, grabbed him and walked him outside. When the veteran pulled his arm away from one of the cops, a struggle ensued. It wasn't until Ruffin felt one of the cop's guns that he realized he was dealing with law enforcement.

A standoff between a wheelchair-bound man and Delaware police officers ended tragically when the disabled man was shot to death in a blast of gunfire on…