Love him or hate him, proper flag etiquette requires you to fly it at half mast. Even if you detest him, as long as you fly the flag you should show proper respect to it by following the proscribed procedures.
"The flag is to be flown at half staff in mourning for designated, principal government leaders and upon presidential or gubernatorial order."
"The flag is to be flown at half staff in mourning for designated, principal government leaders and upon presidential or gubernatorial order."