By 'arrogance' I mean comments about your passengers such as:
They don't call them cattle-class for nothing.
the great unwashed
If you are prepared to publicly refer to your passengers as above then this does you little credit. I am sure that some of the better pilots contributing to this thread will have felt uncomfortable hearing a colleague referring to passengers like this.
I have every respect for the qualifications of the crew up front and some of the difficulties that you encounter, of course your passengers should take notice of instructions you provide and those who act stupid are stupid, my point is that it is unprofessional to refer to your customers generically, whoever they are, in a derogatory fashion.