For me Kishwer, Suyyash and Prince are acting as goons in the house and hence people do refer to them as mawalis or classless people. Kishwer who spits in people's drinks and says I'll do what I do in the washroom in a person's hand is what is considered a classless comment.
They aren't inhuman as they haven't committed a crime till date but they don't know how to behave. Calling them inhuman doesn't make sense but they have really low standards.
I am nobody to judge anyone's class but when a person starts talking crap, using abusive words and doesn't have any morals or manners how to behave in public, he is an ill mannered and immoral person commonly referred to as a Mawali or Tapori. I have never used this term but do believe Kishwer and Co. don't have any morals or values. Neither does anyone in the house have. They all want to entertain the audience and earn money but they try to stoop low while doing this.