This post is borderline, at best.  "Mongrel," applied to a woman, certainly suggests "bitch," which is what countless T-shirts at Trump rallies openly call Mrs. Clinton.

"Mongrel" is also offensive because it implies adulterated ancestry, i.e., that an individual is inherently inferior because of his or her ancestry.  That's one baby step away from racism.

And, as perhaps you've noticed, you don't know how to spell "mongrel."