“Nugent in the past has referred to President Barack Obama as a “subhuman mongrel.” Nugent later apologized “for using the street fight terminology of subhuman mongrel.” But he maintained that Obama was a “liar” violating the Constitution.”
Obama used the term “Mongrel” in a Speech.
Nugent just added the “subhuman” part for effect.
Commies are “subhuman”, so I have no idea what the issue is.